Vascular Calcifications Seen on Mammography: An Independent Factor Indicating Coronary Artery Disease

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array:1 [ "en" => true ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Gulseren Kayalar, Alev Cevikol, Gunes Yavuzer, Yavuz Sanisoglu, Aytul Cakci, Tansu Arasıl" "autores" => array:6 [ 0 => array:2 [ "nombre" => "Gulseren" "apellidos" => "Kayalar" ] 1 => array:2 [ "nombre" => "Alev" "apellidos" => "Cevikol" ] 2 => array:2 [ "nombre" => "Gunes" "apellidos" => "Yavuzer" ] 3 => array:2 [ "nombre" => "Yavuz" "apellidos" => "Sanisoglu" ] 4 => array:2 [ "nombre" => "Aytul" "apellidos" => "Cakci" ] 5 => array:2 [ "nombre" => "Tansu" "apellidos" => "Arasıl" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S1807593222025741?idApp=UINPBA00004N" "url" => "/18075932/0000006400000008/v1_202212060853/S1807593222025741/v1_202212060853/en/main.assets" ] "en" => array:18 [ "idiomaDefecto" => true "cabecera" => "Clinical Sciences" "titulo" => "Vascular Calcifications Seen on Mammography: An Independent Factor Indicating Coronary 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Oliveira, Ruffo Freitas-Junior, Abrahão Afiune-Neto, Eddie F.C. Murta, Júlio E. Ferro, Aline F.B. Melo" "autores" => array:6 [ 0 => array:3 [ "nombre" => "Evelling L.C." "apellidos" => "Oliveira" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "I" "identificador" => "afI-cln64_8p763" ] ] ] 1 => array:3 [ "nombre" => "Ruffo" "apellidos" => "Freitas-Junior" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "I" "identificador" => "afI-cln64_8p763" ] ] ] 2 => array:3 [ "nombre" => "Abrahão" "apellidos" => "Afiune-Neto" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "II" "identificador" => "afII-cln64_8p763" ] ] ] 3 => array:4 [ "nombre" => "Eddie F.C." "apellidos" => "Murta" "email" => array:1 [ 0 => "ruffojr@terra.com.br" ] "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "III" "identificador" => "afIII-cln64_8p763" ] ] ] 4 => array:3 [ "nombre" => "Júlio E." 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"apellidos" => "Melo" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "I" "identificador" => "afI-cln64_8p763" ] ] ] ] "afiliaciones" => array:3 [ 0 => array:3 [ "entidad" => "Department of Gynecology and Obstetrics, School of Medicine of the Federal University of Goiás - Goiânia/GO, Brazil" "etiqueta" => "I" "identificador" => "afI-cln64_8p763" ] 1 => array:3 [ "entidad" => "Department of Cardiology, School of Medicine of the Federal University of Goiás - Goiânia/GO, Brazil" "etiqueta" => "II" "identificador" => "afII-cln64_8p763" ] 2 => array:3 [ "entidad" => "Oncologycal Research Institute (IPON), Discipline of Gynecology and Obstetrics, Federal University of Triângulo Mineiro - Uberaba/MG, Brazil Tel: 55 62 3945.4769" "etiqueta" => "III" "identificador" => "afIII-cln64_8p763" ] ] ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "f1-cln64_8p763" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 903 "Ancho" => 1736 "Tamanyo" => 93450 ] ] "descripcion" => array:1 [ "en" => "Classification of the intensity of vascular calcifications: a) slight: Arteries with few calcifications at large distances from each other (more than 10 mm); b) moderate: Arteries clearly outlined by calcifications over a considerable proportion of their course; c) severe: Arteries extensively affected, seen as almost continuous columns of calcification with at least two branches also visible" ] ] ] "textoCompleto" => "INTRODUCTIONAtherosclerosis is the principal cause of morbidity and mortality in Western countries, and coronary artery disease is its most frequent complication.<a class="elsevierStyleCrossRef" href="#bib1">1</a> It is believed that in the United States more than 12 million people have coronary artery disease. This disease consumes the greatest quantity of healthcare resources in developed countries.<a class="elsevierStyleCrossRef" href="#bib2">2</a> Although a large proportion of the associated risk factors for coronary artery disease are preventable, acute myocardial infarction is still the leading cause of death among women over the age of 40 years.<a class="elsevierStyleCrossRefs" href="#bib3">3,4</a>Vascular calcifications that are seen via mammography are called Mönckeberg calcifications, and involve the middle layer of the arteries. These calcifications are generally diffuse and thin, and tend to involve the entire circumference of the peripheral arteries, making the vessels rigid with little capacity for distension.<a class="elsevierStyleCrossRefs" href="#bib5">5,6</a> Calcifications are infrequent in patients less than 50 years old and are found in around 9.1% of mammograms.<a class="elsevierStyleCrossRef" href="#bib7">7</a> The prevalence of calcifications ranges from 9% to 17%, for the female population while the prevalence increases with age and exceeds 50% among women aged 65 years and above.<a class="elsevierStyleCrossRef" href="#bib8">8</a>Some studies have found associations between vascular calcifications in breast tissue and chronic diseases such as diabetes, systemic arterial hypertension, coronary artery disease, kidney failure, autonomic neuropathy and hypervitaminosis D.<a class="elsevierStyleCrossRef" href="#bib9">9</a>–<a class="elsevierStyleCrossRef" href="#bib13">13</a>Although no ischemic or embolic events have been observed, the presence of calcifications in the middle layer of arteries is correlated with an increased risk of coronary artery disease and diabetes.<a class="elsevierStyleCrossRef" href="#bib14">14</a>, <a class="elsevierStyleCrossRef" href="#bib15">15</a> The clinical significance of Mönckeberg calcifications is controversial; however, they are commonly found in diabetic women and may be a predictive factor for cardiovascular events.<a class="elsevierStyleCrossRef" href="#bib16">16</a>–<a class="elsevierStyleCrossRef" href="#bib18">18</a>Thus, the purpose of this study was to determine the nature of the relationship between vascular calcifications in breast tissue and coronary artery disease.MATERIALS AND METHODSApproval for this case-control study was obtained from the Research Ethics Committee. Eighty women were included in this study. They were all informed about the purpose of the study and signed a free and informed consent statement.Inclusion criteria for the coronary artery disease groupForty women with coronary artery disease who had undergone mammography during the preceding twelve months were included in the case group. Cases were defined as coronary artery disease cases if the disease had been confirmed by coronariography or the individuals had experienced at least one episode of acute myocardial infarction.The electrocardiographic findings that constituted a diagnosis of acute myocardial infarction included: ST depression or T wave inversion without Q waves in cases of infarction without Q waves; new Q waves with hyper-acute T waves and ST elevation followed by T wave inversion in cases of infarction with T waves.Inclusion criteria for the control groupThe eligibility criteria for inclusion into the control group included: Individuals should have attended the outpatient mastology clinic to undergo mammography within the twelve months preceding the inclusion date, not have had any previous signs and symptoms of coronary artery disease, and have a normal electrocardiogram. The controls were matched to the cases according to age, plus or minus two years, which was ascertained at the time of mammography.Variables analyzedThe variables analyzed were defined as follows. Systemic arterial hypertension: Diastolic arterial pressure (DAP) ≥ 90 mmHg or systolic arterial pressure (SAP) ≥ 140 mmHg or regular use of pressure lowering medications. Diabetes mellitus: Fasting serum glucose ≥ 126 mg/dl; serum glucose two hours after intake of 75 g of glucose ≥ 200 mg/dl; random serum glucose ≥ 200 mg/ dl with symptoms of polyuria, polydipsia and unexplained weight loss; or use of hypoglycemic agents. Dyslipidemia: Total cholesterol ≥ 200 mg/dl, LDL cholesterol ≥ 130 mg/ dl and HDL cholesterol ≤ 40 mg/dl. Body mass index (BMI): Ratio of weight in kilograms (kg) to height in meters squared (m2). Obesity: BMI ≥ 25 kg/m2. Sedentary lifestyle: Patients who were not doing any physical activity or were doing it irregularly.Vascular calcification in breast tissue was defined as the presence of parallel linear calcified deposits along the course of a vessel that was seen on at least one mammographic viewing plane. The intensity of the calcifications, number of vessels affected and the side affected were analyzed. The presence and intensity of the calcifications was graded as follows: Absent: No vascular calcifications; slight: Arteries with little calcification with distances greater than 10 mm between calcified areas (<a class="elsevierStyleCrossRef" href="#f1-cln64_8p763">Figure 1a</a>); moderate: Arteries clearly outlined by calcifications over a considerable proportion of their course (<a class="elsevierStyleCrossRef" href="#f1-cln64_8p763">Figure 1b</a>); and severe: Arteries extensively affected, seen to have almost continuous columns of calcification, with at least two branches also visible (<a class="elsevierStyleCrossRef" href="#f1-cln64_8p763">Figure 1c</a>). All mammograms were analyzed by only one observer.<elsevierMultimedia ident="f1-cln64_8p763"></elsevierMultimedia>The number of calcified vessels was analyzed independently of the intensity of calcification. The laterality of the calcification was also analyzed and graded as unilateral, bilateral.Statistical analysisThe data were typed into the dbase III database, and this was done twice to avoid typing errors. After compiling and checking the information, statistical analysis was performed using the SPSS 11.0.1 software. Univariate analysis was used to calculate odds ratios and confidence intervals for relationships between vascular calcifications and each of the factors already known to be involved in coronary artery disease. Multivariate analysis was also performed, by means of logistic regression, to estimate the interrelationships between different variables and coronary artery disease. P<0.05 was taken to be significant in this analysis.RESULTSIn this study, the mean age was 64.65 years (SD ±8.49) in the case group and 63.88 (SD ±8.59) in the control group. Among the patients with coronary artery disease, 37 (92.5%) presented with hypertension, 15 (37.5%) with diabetes, 28 (70.0%) had a sedentary lifestyle and 27 (67.5%) had a family history of coronary artery disease. In the control group, 20 (50.0%) presented with hypertension, five (12.5%) with diabetes, 22 (55.0%) had a sedentary lifestyle and 18 (40.0%) had a family history of coronary artery disease.In univariate analysis, there were statistically significant differences between the case group and the control group in relation to serum levels of total cholesterol (p=0.02), LDL cholesterol (p=0.01), fasting serum glucose (p<0.01), systolic arterial pressure levels (p=0.03), diastolic arterial pressure levels (p<0.01) and the number of cigarettes smoked per day (p=0.05). There was no statistically significant difference between the groups in relation to serum HDL cholesterol (p=0.62), BMI (p=0.68) or length of time with smoking habit (p=0.21).The odds ratio (OR) for coronary artery disease, in relation to vascular calcifications in breast tissue seen via mammography, was 3.56. The odds ratios for the other risk factors analyzed were 4.20 for diabetes mellitus, 12.33 for arterial hypertension, and 2.53 for a family history of coronary artery disease. Sedentary lifestyle was not shown to be a risk factor in our study (<a class="elsevierStyleCrossRef" href="#t1-cln64_8p763">Table 1</a>).<elsevierMultimedia ident="t1-cln64_8p763"></elsevierMultimedia>When vascular calcifications were found to be present in breast tissue via mammography, they were always bilateral. There was a statistically significant difference in the intensity of the calcifications between the two groups, as shown in <a class="elsevierStyleCrossRef" href="#t2-cln64_8p763">Table 2</a>. The median number of calcified vessels was three in the case group and none in the control group (p<0.01).<elsevierMultimedia ident="t2-cln64_8p763"></elsevierMultimedia>In multivariate analysis, it was observed that only family history (OR 5.76), arterial hypertension (OR 15.92) and vascular calcifications in breast tissue (OR 4.71) were risk factors for the occurrence of coronary artery disease. Smoking and diabetes were not independently associated with the risk of coronary artery disease (<a class="elsevierStyleCrossRef" href="#t3-cln64_8p763">Table 3</a>).<elsevierMultimedia ident="t3-cln64_8p763"></elsevierMultimedia>DISCUSSIONVascular calcifications in breast tissue usually have a lipid component and resemble calcifications seen in other arteries. The mechanism of deposition is still unknown<a class="elsevierStyleCrossRef" href="#bib6">6</a>.In our analysis, we found that the presence of vascular calcifications in breast tissue seen via mammography was an independent risk factor for coronary artery disease. Some previous studies have also found such an association. In previous studies, 16 to 31% of women with coronary artery disease presented with vascular calcifications seen via mammography.<a class="elsevierStyleCrossRef" href="#bib19">19</a>–<a class="elsevierStyleCrossRef" href="#bib21">21</a> In a study of 131 women in 2007, Ferreira et al. found an odds ratio of 2.96 (CI 1.25–7.30),<a class="elsevierStyleCrossRef" href="#bib19">19</a> which was slightly lower than the odds ratio of 3.56 (CI 1.40–9.08) that was found in the present study.One interesting finding was that, when present, the vascular calcifications in breast tissue were bilateral, thus showing that the atherosclerotic process and consequent vascular calcification was affecting the entire arterial system.Age was not an important risk factor in this study, given that the study design involved matching the patients in the case and control groups by age.Univariate analysis showed that all of the investigated factors (except BMI) were associated with coronary artery disease; however, after multivariate analysis, it was observed that some factors that are known to be associated with coronary artery disease<a class="elsevierStyleCrossRefs" href="#bib1">1,3</a> lost their statistical significance, among which were smoking and diabetes.One likely explanation for this finding was presented by Çetin et al., who showed that diabetic women also had a greater risk of vascular calcifications in breast tissue.<a class="elsevierStyleCrossRef" href="#bib10">10</a> In our analysis, the association between vascular calcifications in breast tissue and coronary artery disease was greater than the association between diabetes and coronary artery disease. This correlation may explain the loss of statistical significance between diabetes and coronary artery disease in the multivariate analysis. Apart from being a risk factor for coronary artery disease, vascular calcifications in breast tissue may also indicate the presence of diabetes.<a class="elsevierStyleCrossRefs" href="#bib10">10,22</a> Vascular calcifications are frequently associated with abnormalities in bone metabolism, dyslipidemia and chronic inflammation.<a class="elsevierStyleCrossRef" href="#bib23">23</a>In addition to vascular calcifications in breast tissue, systemic arterial hypertension and a family history of coronary artery disease were also independent risk factors for coronary artery disease. Systemic arterial hypertension was the risk factor that showed the greatest association with coronary artery disease.These same associations were found by Crystal et al., who found that the presence of calcifications, seen via mammography, was significantly associated with the existence of coronary artery disease and that family history had the highest odds ratio. Variables such as age, diabetes mellitus and menopause were less significant than the presence of vascular calcifications.<a class="elsevierStyleCrossRef" href="#bib24">24</a>Although smoking is an important risk factor for coronary artery disease, data from this study did not show any association between smoking and the presence of vascular calcifications in breast tissue. Another study also did not find this association.<a class="elsevierStyleCrossRef" href="#bib14">14</a>The purpose of this study was to evaluate the association between coronary artery disease and vascular calcifications seen via mammography. The data obtained herein demonstrated a significant association between vascular calcifications and coronary artery disease that was independent of other known risk factors. This finding suggests that mammography might be a very important screening method for coronary artery disease in women. Mammography is an already important imaging method for breast cancer, but this study suggests that it is also useful for testing for other chronic-degenerative diseases." "textoCompletoSecciones" => array:1 [ "secciones" => array:6 [ 0 => array:2 [ "identificador" => "xpalclavsec1585126" "titulo" => "KEYWORDS:" ] 1 => array:2 [ "identificador" => "cesec10" "titulo" => "INTRODUCTION" ] 2 => array:3 [ "identificador" => "cesec20" "titulo" => "MATERIALS AND METHODS" "secciones" => array:4 [ 0 => array:2 [ "identificador" => "cesec30" "titulo" => "Inclusion criteria for the coronary artery disease group" ] 1 => array:2 [ "identificador" => "cesec40" "titulo" => "Inclusion criteria for the control group" ] 2 => array:2 [ "identificador" => "cesec50" "titulo" => "Variables analyzed" ] 3 => array:2 [ "identificador" => "cesec60" "titulo" => "Statistical analysis" ] ] ] 3 => array:2 [ "identificador" => "cesec70" "titulo" => "RESULTS" ] 4 => array:2 [ "identificador" => "cesec80" "titulo" => "DISCUSSION" ] 5 => array:1 [ "titulo" => "REFERENCES" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2009-03-09" "fechaAceptado" => "2009-05-15" "PalabrasClave" => array:1 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "KEYWORDS:" "identificador" => "xpalclavsec1585126" "palabras" => array:3 [ 0 => "Mammography" 1 => "Vascular calcifications" 2 => "Coronary artery disease" ] ] ] ] "tieneResumen" => true "resumen" => array:1 [ "en" => array:2 [ "resumen" => "PURPOSEEstablish a relationship between vascular calcifications seen via mammography and coronary artery disease, estimate the risk ratios, and investigate the interrelationships between vascular calcification and other risk factors for coronary artery disease. MATERIALS AND METHODSThis was a case-control study consisting of 40 women with coronary artery disease in the case group and 40 women without any history of coronary artery disease in the control group who were matched according to age. The study was approved by the Institution’s Research Ethics Committee (consent statement was obtained). Odds ratios and confidence intervals were calculated using univariate analysis. Interrelationships among other risk factors, such as arterial hypertension, dyslipidemia, smoking and diabetes mellitus, were calculated using multivariate analysis. A p <0.05 was considered to be significant for statistical analysis. RESULTSThe mean ages for the case and control groups were 64.65 years and 63.88 years, respectively. In multivariate analysis, the only variables related to coronary artery disease were Vascular calcification [OR 4.71 (CI 1.36–16.33) p=0.014], family history [OR 5.76 (CI 1.58–21.03) p=0.008] and arterial hypertension [OR 15.92 (CI 3.12–81.14) p=0.001]. Although smoking and diabetes are important variables in the pathogenesis of coronary artery disease, these factors did not show statistically significant associations in this sample. CONCLUSIONThe presence of vascular calcifications seen via mammography was an independent risk factor for coronary artery disease, as were hypertension and a family history of coronary artery disease." "secciones" => array:4 [ 0 => array:2 [ "identificador" => "ceabs10" "titulo" => "PURPOSE" ] 1 => array:2 [ "identificador" => "ceabs20" "titulo" => "MATERIALS AND METHODS" ] 2 => array:2 [ "identificador" => "ceabs30" "titulo" => "RESULTS" ] 3 => array:2 [ "identificador" => "ceabs40" "titulo" => "CONCLUSION" ] ] ] ] "multimedia" => array:4 [ 0 => array:7 [ "identificador" => "f1-cln64_8p763" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 903 "Ancho" => 1736 "Tamanyo" => 93450 ] ] "descripcion" => array:1 [ "en" => "Classification of the intensity of vascular calcifications: a) slight: Arteries with few calcifications at large distances from each other (more than 10 mm); b) moderate: Arteries clearly outlined by calcifications over a considerable proportion of their course; c) severe: Arteries extensively affected, seen as almost continuous columns of calcification with at least two branches also visible" ] ] 1 => array:7 [ "identificador" => "t1-cln64_8p763" "etiqueta" => "Table 1" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:1 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">Variables \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">Coronary artery disease \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">Non-coronary artery disease \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">X<a class="elsevierStyleCrossRef" href="#bib2">2</a> \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">p \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">OR (95% CI) \t\t\t\t\t\t\n \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Diabetes \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">15 (37.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">5 (12.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">668 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.01 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">4.20 (1.35–13.07) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Hypertension \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">37 (92.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">20 (50.0%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">17.64 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><0.01 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">12.33 (3.26–46.63) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Sedentary lifestyle \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">28 (70.0%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">22 (55.0%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.92 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.16 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.91 (0.76–4.79) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Family history \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">27 (67.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">18 (40.0%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">4.11 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.04 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">2.53 (1.02–6.30) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Vascular calcification \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">23 (57.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">11 (27.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">7.36 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black"><0.01 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">3.56 (1.40–9.08) \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] ] ] ] "descripcion" => array:1 [ "en" => "Univariate analysis of factors presumed to present a risk for coronary artery disease" ] ] 2 => array:7 [ "identificador" => "t2-cln64_8p763" "etiqueta" => "Table 2" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:2 [ "leyenda" => "P=0.018" "tablatextoimagen" => array:1 [ 0 => array:1 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">Calcification intensity \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">Coronary artery disease \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">Non-coronary artery disease \t\t\t\t\t\t\n \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">No calcification \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">17 (42.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">30 (75%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Slight \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">13 (32.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">7 (17.5%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Moderate \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">7 (17.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">3 (7.5%) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Severe \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">3 (7.5%) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">0 \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] ] ] ] "descripcion" => array:1 [ "en" => "Analysis of the intensity of calcifications seen on mammograms according to the groups" ] ] 3 => array:7 [ "identificador" => "t3-cln64_8p763" "etiqueta" => "Table 3" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:1 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">Variable \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">OR \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">Std. Err \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">z \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">p \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col">(95% CI) \t\t\t\t\t\t\n \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">History of heart disease \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">5.76 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">3.80 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">2.65 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.008 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">(1.58–21.03) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Smoking \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">4.78 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">4.59 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.63 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.103 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">(0.72–31.45) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Hypertension \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">15.92 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">13.23 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">3.33 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.001 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">(3.12–81.14) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Diabetes \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">3.10 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">2.17 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.62 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.105 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t">(0.78–12.24) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Vascular calcification \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">4.71 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">2.98 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">2.45 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">0.014 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="center" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">(1.36–16.33) \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] ] ] ] "descripcion" => array:1 [ "en" => "Multivariate analysis of factors presumed to present a risk of coronary artery disease" ] ] ] "bibliografia" => array:2 [ "titulo" => "REFERENCES" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "cebibsec10" "bibliografiaReferencia" => array:24 [ 0 => array:3 [ "identificador" => "bib1" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Heart disease and stroke statistics" "autores" => array:1 [ 0 => array:2 [ "colaboracion" => "American Heart Association" "etal" 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Clinical Sciences

Evelling L.C. OliveiraI, Ruffo Freitas-JuniorI, Abrahão Afiune-NetoII, Eddie F.C. MurtaIII, Júlio E. FerroI, Aline F.B. MeloI

I Department of Gynecology and Obstetrics, School of Medicine of the Federal University of Goiás - Goiânia/GO, Brazil

II Department of Cardiology, School of Medicine of the Federal University of Goiás - Goiânia/GO, Brazil

III Oncologycal Research Institute (IPON), Discipline of Gynecology and Obstetrics, Federal University of Triângulo Mineiro - Uberaba/MG, Brazil Tel: 55 62 3945.4769

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          "en" => "<p id="spara10" class="elsevierStyleSimplePara elsevierViewall">Classification of the intensity of vascular calcifications&#58; a&#41; slight&#58; Arteries with few calcifications at large distances from each other &#40;more than 10 mm&#41;&#59; b&#41; moderate&#58; Arteries clearly outlined by calcifications over a considerable proportion of their course&#59; c&#41; severe&#58; Arteries extensively affected&#44; seen as almost continuous columns of calcification with at least two branches also visible</p>"
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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="cesec10" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle60">INTRODUCTION</span><p id="para10" class="elsevierStylePara elsevierViewall">Atherosclerosis is the principal cause of morbidity and mortality in Western countries&#44; and coronary artery disease is its most frequent complication&#46;<a class="elsevierStyleCrossRef" href="#bib1">1</a> It is believed that in the United States more than 12 million people have coronary artery disease&#46; This disease consumes the greatest quantity of healthcare resources in developed countries&#46;<a class="elsevierStyleCrossRef" href="#bib2">2</a> Although a large proportion of the associated risk factors for coronary artery disease are preventable&#44; acute myocardial infarction is still the leading cause of death among women over the age of 40 years&#46;<a class="elsevierStyleCrossRefs" href="#bib3">3&#44;4</a></p><p id="para20" class="elsevierStylePara elsevierViewall">Vascular calcifications that are seen via mammography are called M&#246;nckeberg calcifications&#44; and involve the middle layer of the arteries&#46; These calcifications are generally diffuse and thin&#44; and tend to involve the entire circumference of the peripheral arteries&#44; making the vessels rigid with little capacity for distension&#46;<a class="elsevierStyleCrossRefs" href="#bib5">5&#44;6</a> Calcifications are infrequent in patients less than 50 years old and are found in around 9&#46;1&#37; of mammograms&#46;<a class="elsevierStyleCrossRef" href="#bib7">7</a> The prevalence of calcifications ranges from 9&#37; to 17&#37;&#44; for the female population while the prevalence increases with age and exceeds 50&#37; among women aged 65 years and above&#46;<a class="elsevierStyleCrossRef" href="#bib8">8</a></p><p id="para30" class="elsevierStylePara elsevierViewall">Some studies have found associations between vascular calcifications in breast tissue and chronic diseases such as diabetes&#44; systemic arterial hypertension&#44; coronary artery disease&#44; kidney failure&#44; autonomic neuropathy and hypervitaminosis D&#46;<a class="elsevierStyleCrossRef" href="#bib9">9</a>&#8211;<a class="elsevierStyleCrossRef" href="#bib13">13</a></p><p id="para40" class="elsevierStylePara elsevierViewall">Although no ischemic or embolic events have been observed&#44; the presence of calcifications in the middle layer of arteries is correlated with an increased risk of coronary artery disease and diabetes&#46;<a class="elsevierStyleCrossRef" href="#bib14">14</a>&#44; <a class="elsevierStyleCrossRef" href="#bib15">15</a> The clinical significance of M&#246;nckeberg calcifications is controversial&#59; however&#44; they are commonly found in diabetic women and may be a predictive factor for cardiovascular events&#46;<a class="elsevierStyleCrossRef" href="#bib16">16</a>&#8211;<a class="elsevierStyleCrossRef" href="#bib18">18</a></p><p id="para50" class="elsevierStylePara elsevierViewall">Thus&#44; the purpose of this study was to determine the nature of the relationship between vascular calcifications in breast tissue and coronary artery disease&#46;</p></span><span id="cesec20" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle70">MATERIALS AND METHODS</span><p id="para60" class="elsevierStylePara elsevierViewall">Approval for this case-control study was obtained from the Research Ethics Committee&#46; Eighty women were included in this study&#46; They were all informed about the purpose of the study and signed a free and informed consent statement&#46;</p><span id="cesec30" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle80">Inclusion criteria for the coronary artery disease group</span><p id="para70" class="elsevierStylePara elsevierViewall">Forty women with coronary artery disease who had undergone mammography during the preceding twelve months were included in the case group&#46; Cases were defined as coronary artery disease cases if the disease had been confirmed by coronariography or the individuals had experienced at least one episode of acute myocardial infarction&#46;</p><p id="para80" class="elsevierStylePara elsevierViewall">The electrocardiographic findings that constituted a diagnosis of acute myocardial infarction included&#58; ST depression or T wave inversion without Q waves in cases of infarction without Q waves&#59; new Q waves with hyper-acute T waves and ST elevation followed by T wave inversion in cases of infarction with T waves&#46;</p></span><span id="cesec40" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle90">Inclusion criteria for the control group</span><p id="para90" class="elsevierStylePara elsevierViewall">The eligibility criteria for inclusion into the control group included&#58; Individuals should have attended the outpatient mastology clinic to undergo mammography within the twelve months preceding the inclusion date&#44; not have had any previous signs and symptoms of coronary artery disease&#44; and have a normal electrocardiogram&#46; The controls were matched to the cases according to age&#44; plus or minus two years&#44; which was ascertained at the time of mammography&#46;</p></span><span id="cesec50" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle100">Variables analyzed</span><p id="para100" class="elsevierStylePara elsevierViewall">The variables analyzed were defined as follows&#46; Systemic arterial hypertension&#58; Diastolic arterial pressure &#40;DAP&#41; &#8805; 90 mmHg or systolic arterial pressure &#40;SAP&#41; &#8805; 140 mmHg or regular use of pressure lowering medications&#46; Diabetes mellitus&#58; Fasting serum glucose &#8805; 126 mg&#47;dl&#59; serum glucose two hours after intake of 75 g of glucose &#8805; 200 mg&#47;dl&#59; random serum glucose &#8805; 200 mg&#47; dl with symptoms of polyuria&#44; polydipsia and unexplained weight loss&#59; or use of hypoglycemic agents&#46; Dyslipidemia&#58; Total cholesterol &#8805; 200 mg&#47;dl&#44; LDL cholesterol &#8805; 130 mg&#47; dl and HDL cholesterol &#8804; 40 mg&#47;dl&#46; Body mass index &#40;BMI&#41;&#58; Ratio of weight in kilograms &#40;kg&#41; to height in meters squared &#40;m<span class="elsevierStyleSup">2</span>&#41;&#46; Obesity&#58; BMI &#8805; 25 kg&#47;m<span class="elsevierStyleSup">2</span>&#46; Sedentary lifestyle&#58; Patients who were not doing any physical activity or were doing it irregularly&#46;</p><p id="para110" class="elsevierStylePara elsevierViewall">Vascular calcification in breast tissue was defined as the presence of parallel linear calcified deposits along the course of a vessel that was seen on at least one mammographic viewing plane&#46; The intensity of the calcifications&#44; number of vessels affected and the side affected were analyzed&#46; The presence and intensity of the calcifications was graded as follows&#58; Absent&#58; No vascular calcifications&#59; slight&#58; Arteries with little calcification with distances greater than 10 mm between calcified areas &#40;<a class="elsevierStyleCrossRef" href="#f1-cln64_8p763">Figure 1a</a>&#41;&#59; moderate&#58; Arteries clearly outlined by calcifications over a considerable proportion of their course &#40;<a class="elsevierStyleCrossRef" href="#f1-cln64_8p763">Figure 1b</a>&#41;&#59; and severe&#58; Arteries extensively affected&#44; seen to have almost continuous columns of calcification&#44; with at least two branches also visible &#40;<a class="elsevierStyleCrossRef" href="#f1-cln64_8p763">Figure 1c</a>&#41;&#46; All mammograms were analyzed by only one observer&#46;</p><elsevierMultimedia ident="f1-cln64_8p763"></elsevierMultimedia><p id="para120" class="elsevierStylePara elsevierViewall">The number of calcified vessels was analyzed independently of the intensity of calcification&#46; The laterality of the calcification was also analyzed and graded as unilateral&#44; bilateral&#46;</p></span><span id="cesec60" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle110">Statistical analysis</span><p id="para130" class="elsevierStylePara elsevierViewall">The data were typed into the dbase III database&#44; and this was done twice to avoid typing errors&#46; After compiling and checking the information&#44; statistical analysis was performed using the SPSS 11&#46;0&#46;1 software&#46; Univariate analysis was used to calculate odds ratios and confidence intervals for relationships between vascular calcifications and each of the factors already known to be involved in coronary artery disease&#46; Multivariate analysis was also performed&#44; by means of logistic regression&#44; to estimate the interrelationships between different variables and coronary artery disease&#46; P&#60;0&#46;05 was taken to be significant in this analysis&#46;</p></span></span><span id="cesec70" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle120">RESULTS</span><p id="para140" class="elsevierStylePara elsevierViewall">In this study&#44; the mean age was 64&#46;65 years &#40;SD &#177;8&#46;49&#41; in the case group and 63&#46;88 &#40;SD &#177;8&#46;59&#41; in the control group&#46; Among the patients with coronary artery disease&#44; 37 &#40;92&#46;5&#37;&#41; presented with hypertension&#44; 15 &#40;37&#46;5&#37;&#41; with diabetes&#44; 28 &#40;70&#46;0&#37;&#41; had a sedentary lifestyle and 27 &#40;67&#46;5&#37;&#41; had a family history of coronary artery disease&#46; In the control group&#44; 20 &#40;50&#46;0&#37;&#41; presented with hypertension&#44; five &#40;12&#46;5&#37;&#41; with diabetes&#44; 22 &#40;55&#46;0&#37;&#41; had a sedentary lifestyle and 18 &#40;40&#46;0&#37;&#41; had a family history of coronary artery disease&#46;</p><p id="para150" class="elsevierStylePara elsevierViewall">In univariate analysis&#44; there were statistically significant differences between the case group and the control group in relation to serum levels of total cholesterol &#40;p&#61;0&#46;02&#41;&#44; LDL cholesterol &#40;p&#61;0&#46;01&#41;&#44; fasting serum glucose &#40;p&#60;0&#46;01&#41;&#44; systolic arterial pressure levels &#40;p&#61;0&#46;03&#41;&#44; diastolic arterial pressure levels &#40;p&#60;0&#46;01&#41; and the number of cigarettes smoked per day &#40;p&#61;0&#46;05&#41;&#46; There was no statistically significant difference between the groups in relation to serum HDL cholesterol &#40;p&#61;0&#46;62&#41;&#44; BMI &#40;p&#61;0&#46;68&#41; or length of time with smoking habit &#40;p&#61;0&#46;21&#41;&#46;</p><p id="para160" class="elsevierStylePara elsevierViewall">The odds ratio &#40;OR&#41; for coronary artery disease&#44; in relation to vascular calcifications in breast tissue seen via mammography&#44; was 3&#46;56&#46; The odds ratios for the other risk factors analyzed were 4&#46;20 for diabetes mellitus&#44; 12&#46;33 for arterial hypertension&#44; and 2&#46;53 for a family history of coronary artery disease&#46; Sedentary lifestyle was not shown to be a risk factor in our study &#40;<a class="elsevierStyleCrossRef" href="#t1-cln64_8p763">Table 1</a>&#41;&#46;</p><elsevierMultimedia ident="t1-cln64_8p763"></elsevierMultimedia><p id="para170" class="elsevierStylePara elsevierViewall">When vascular calcifications were found to be present in breast tissue via mammography&#44; they were always bilateral&#46; There was a statistically significant difference in the intensity of the calcifications between the two groups&#44; as shown in <a class="elsevierStyleCrossRef" href="#t2-cln64_8p763">Table 2</a>&#46; The median number of calcified vessels was three in the case group and none in the control group &#40;p&#60;0&#46;01&#41;&#46;</p><elsevierMultimedia ident="t2-cln64_8p763"></elsevierMultimedia><p id="para180" class="elsevierStylePara elsevierViewall">In multivariate analysis&#44; it was observed that only family history &#40;OR 5&#46;76&#41;&#44; arterial hypertension &#40;OR 15&#46;92&#41; and vascular calcifications in breast tissue &#40;OR 4&#46;71&#41; were risk factors for the occurrence of coronary artery disease&#46; Smoking and diabetes were not independently associated with the risk of coronary artery disease &#40;<a class="elsevierStyleCrossRef" href="#t3-cln64_8p763">Table 3</a>&#41;&#46;</p><elsevierMultimedia ident="t3-cln64_8p763"></elsevierMultimedia></span><span id="cesec80" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle130">DISCUSSION</span><p id="para190" class="elsevierStylePara elsevierViewall">Vascular calcifications in breast tissue usually have a lipid component and resemble calcifications seen in other arteries&#46; The mechanism of deposition is still unknown<a class="elsevierStyleCrossRef" href="#bib6">6</a>&#46;</p><p id="para200" class="elsevierStylePara elsevierViewall">In our analysis&#44; we found that the presence of vascular calcifications in breast tissue seen via mammography was an independent risk factor for coronary artery disease&#46; Some previous studies have also found such an association&#46; In previous studies&#44; 16 to 31&#37; of women with coronary artery disease presented with vascular calcifications seen via mammography&#46;<a class="elsevierStyleCrossRef" href="#bib19">19</a>&#8211;<a class="elsevierStyleCrossRef" href="#bib21">21</a> In a study of 131 women in 2007&#44; Ferreira et al&#46; found an odds ratio of 2&#46;96 &#40;CI 1&#46;25&#8211;7&#46;30&#41;&#44;<a class="elsevierStyleCrossRef" href="#bib19">19</a> which was slightly lower than the odds ratio of 3&#46;56 &#40;CI 1&#46;40&#8211;9&#46;08&#41; that was found in the present study&#46;</p><p id="para210" class="elsevierStylePara elsevierViewall">One interesting finding was that&#44; when present&#44; the vascular calcifications in breast tissue were bilateral&#44; thus showing that the atherosclerotic process and consequent vascular calcification was affecting the entire arterial system&#46;</p><p id="para220" class="elsevierStylePara elsevierViewall">Age was not an important risk factor in this study&#44; given that the study design involved matching the patients in the case and control groups by age&#46;</p><p id="para230" class="elsevierStylePara elsevierViewall">Univariate analysis showed that all of the investigated factors &#40;except BMI&#41; were associated with coronary artery disease&#59; however&#44; after multivariate analysis&#44; it was observed that some factors that are known to be associated with coronary artery disease<a class="elsevierStyleCrossRefs" href="#bib1">1&#44;3</a> lost their statistical significance&#44; among which were smoking and diabetes&#46;</p><p id="para240" class="elsevierStylePara elsevierViewall">One likely explanation for this finding was presented by &#199;etin et al&#46;&#44; who showed that diabetic women also had a greater risk of vascular calcifications in breast tissue&#46;<a class="elsevierStyleCrossRef" href="#bib10">10</a> In our analysis&#44; the association between vascular calcifications in breast tissue and coronary artery disease was greater than the association between diabetes and coronary artery disease&#46; This correlation may explain the loss of statistical significance between diabetes and coronary artery disease in the multivariate analysis&#46; Apart from being a risk factor for coronary artery disease&#44; vascular calcifications in breast tissue may also indicate the presence of diabetes&#46;<a class="elsevierStyleCrossRefs" href="#bib10">10&#44;22</a> Vascular calcifications are frequently associated with abnormalities in bone metabolism&#44; dyslipidemia and chronic inflammation&#46;<a class="elsevierStyleCrossRef" href="#bib23">23</a></p><p id="para250" class="elsevierStylePara elsevierViewall">In addition to vascular calcifications in breast tissue&#44; systemic arterial hypertension and a family history of coronary artery disease were also independent risk factors for coronary artery disease&#46; Systemic arterial hypertension was the risk factor that showed the greatest association with coronary artery disease&#46;</p><p id="para260" class="elsevierStylePara elsevierViewall">These same associations were found by Crystal et al&#46;&#44; who found that the presence of calcifications&#44; seen via mammography&#44; was significantly associated with the existence of coronary artery disease and that family history had the highest odds ratio&#46; Variables such as age&#44; diabetes mellitus and menopause were less significant than the presence of vascular calcifications&#46;<a class="elsevierStyleCrossRef" href="#bib24">24</a></p><p id="para270" class="elsevierStylePara elsevierViewall">Although smoking is an important risk factor for coronary artery disease&#44; data from this study did not show any association between smoking and the presence of vascular calcifications in breast tissue&#46; Another study also did not find this association&#46;<a class="elsevierStyleCrossRef" href="#bib14">14</a></p><p id="para280" class="elsevierStylePara elsevierViewall">The purpose of this study was to evaluate the association between coronary artery disease and vascular calcifications seen via mammography&#46; The data obtained herein demonstrated a significant association between vascular calcifications and coronary artery disease that was independent of other known risk factors&#46; This finding suggests that mammography might be a very important screening method for coronary artery disease in women&#46; Mammography is an already important imaging method for breast cancer&#44; but this study suggests that it is also useful for testing for other chronic-degenerative diseases&#46;</p></span></span>"
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        "resumen" => "<span id="ceabs10" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle10">PURPOSE</span><p id="spara60" class="elsevierStyleSimplePara elsevierViewall">Establish a relationship between vascular calcifications seen via mammography and coronary artery disease&#44; estimate the risk ratios&#44; and investigate the interrelationships between vascular calcification and other risk factors for coronary artery disease&#46;</p></span> <span id="ceabs20" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle20">MATERIALS AND METHODS</span><p id="spara70" class="elsevierStyleSimplePara elsevierViewall">This was a case-control study consisting of 40 women with coronary artery disease in the case group and 40 women without any history of coronary artery disease in the control group who were matched according to age&#46; The study was approved by the Institution&#8217;s Research Ethics Committee &#40;consent statement was obtained&#41;&#46; Odds ratios and confidence intervals were calculated using univariate analysis&#46; Interrelationships among other risk factors&#44; such as arterial hypertension&#44; dyslipidemia&#44; smoking and diabetes mellitus&#44; were calculated using multivariate analysis&#46; A p &#60;0&#46;05 was considered to be significant for statistical analysis&#46;</p></span> <span id="ceabs30" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle30">RESULTS</span><p id="spara80" class="elsevierStyleSimplePara elsevierViewall">The mean ages for the case and control groups were 64&#46;65 years and 63&#46;88 years&#44; respectively&#46; In multivariate analysis&#44; the only variables related to coronary artery disease were Vascular calcification &#91;OR 4&#46;71 &#40;CI 1&#46;36&#8211;16&#46;33&#41; p&#61;0&#46;014&#93;&#44; family history &#91;OR 5&#46;76 &#40;CI 1&#46;58&#8211;21&#46;03&#41; p&#61;0&#46;008&#93; and arterial hypertension &#91;OR 15&#46;92 &#40;CI 3&#46;12&#8211;81&#46;14&#41; p&#61;0&#46;001&#93;&#46; Although smoking and diabetes are important variables in the pathogenesis of coronary artery disease&#44; these factors did not show statistically significant associations in this sample&#46;</p></span> <span id="ceabs40" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="cestitle40">CONCLUSION</span><p id="spara90" class="elsevierStyleSimplePara elsevierViewall">The presence of vascular calcifications seen via mammography was an independent risk factor for coronary artery disease&#44; as were hypertension and a family history of coronary artery disease&#46;</p></span>"
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                  \t\t\t\t" scope="col">Variables&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " align="center" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">OR &#40;95&#37; CI&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t">20 &#40;50&#46;0&#37;&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t">&#60;0&#46;01&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t">1&#46;91 &#40;0&#46;76&#8211;4&#46;79&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t" style="border-bottom: 2px solid black">7&#46;36&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t" style="border-bottom: 2px solid black">3 &#40;7&#46;5&#37;&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t">3&#46;80&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t">2&#46;65&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t">0&#46;008&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t">&#40;1&#46;58&#8211;21&#46;03&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t">4&#46;78&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t\ttable-entry\n
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Article information

ISSN: 18075932
Original language: English

DOI:10.1590/S1807-59322009000800009

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