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Perigastric varices detected in a gastrointestinal bleeding study with 99mTc-labeled red blood cells SPECT/CT
Varices perigástricas detectadas en un estudio de hemorragia digestiva mediante SPECT/TC con hematíes marcados con 99mTc
Myoung Hyoun Kim, Soon-Ah Park, Dae-Weung Kim
Corresponding author
akaxan@nate.com

Corresponding author.
Department of Nuclear Medicine, Wonkwang University School of Medicine and Institute of Wonkwang Medical Science, Iksan, Republic of Korea
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">A 66-year-old female with a 6-year history of liver cirrhosis &#40;Child-Turcotte-Pugh class C&#41; complained of drowsiness&#44; intermittent hematochezia and melena&#46; She received endoscopic injection sclerotherapy for gastroesophageal varices two years ago&#46; Her hemoglobin level was 7&#46;5<span class="elsevierStyleHsp" style=""></span>g&#47;dL &#40;reference range&#44; 12&#46;0&#8211;15&#46;9<span class="elsevierStyleHsp" style=""></span>g&#47;dL&#41; and gastrointestinal bleeding was suspected&#46; An upper gastrointestinal endoscopy showed gastric and duodenal ulcers without active bleeding&#46; On colonoscopy&#44; large amount of bleeding was showed&#44; but exact bleeding focus was not demonstrated&#46; The patient was referred for a gastrointestinal bleeding scintigraphy with <span class="elsevierStyleSup">99m</span>Tc-labeled red blood cells &#40;<span class="elsevierStyleSup">99m</span>Tc-RBC&#41; to identify and localize the gastrointestinal bleeding&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">Serial gastrointestinal bleeding scintigraphy showed <span class="elsevierStyleSup">99m</span>Tc-RBC activity restricted to the perigastric area &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#44; arrows&#41;&#46; The activity of perigastric area did not show anterograde nor retrograde migration&#46; There was no other evidence of gastrointestinal bleeding until 24<span class="elsevierStyleHsp" style=""></span>hours after injection&#46; Additional SPECT&#47;CT was performed for differential diagnosis at 1 hour after injection of <span class="elsevierStyleSup">99m</span>Tc-RBC&#46; SPECT&#47;CT demonstrated focal increased activity in the perigastric area&#44; but not in the stomach &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46; Subsequent contrast-enhanced abdomen CT showed tortuous and enlarged veins in the perigastric area &#40;<a class="elsevierStyleCrossRef" href="#fig0015">Fig&#46; 3</a>&#41;&#46; These veins are the left gastric vein&#44; which is responsible for the portosystemic collateral&#46; The liver was atrophied&#44; showed nodular surface&#44; and was accompanied by small amount of ascites&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><elsevierMultimedia ident="fig0015"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">Esophageal and gastric varices result from portal hypertension and increased collateral venous flow in patients with advanced liver cirrhosis&#46; Acute variceal bleeding is one of the most fatal complications of cirrhosis and is responsible for about one-third of cirrhosis-related deaths&#46; Although gastric varices have less frequent bleeding than esophageal varices&#44; once bleeding occurs&#44; they can cause massive bleeding and have higher mortality&#46; Therefore&#44; it is very important to confirm the presence of bleeding in the gastric varices and to identify the bleeding focus&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">Gastrointestinal bleeding scintigraphy performed with <span class="elsevierStyleSup">99m</span>Tc-RBC or <span class="elsevierStyleSup">99m</span>Tc-sulfur colloid has been a clinically useful tool since the 1970s&#46; The study is useful to confirm active bleeding and to aid angiographers&#47;surgeons in localization and treatment planning&#46; Recently&#44; SPECT&#47;CT has been applied to further define the location of bleeding&#44; and Dolezal et al&#46; reported that SPECT or SPECT&#47;CT can increase the sensitivity and specificity&#46;<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">1</span></a> Although gastrointestinal bleeding scintigraphy with <span class="elsevierStyleSup">99m</span>Tc-RBC is useful for localization of the active bleeding focus&#44; multiple false positive findings have been described including abdominal&#47;gluteal hematomas&#44; aortic aneurysms and hemangiomas&#46;<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">2</span></a> Also&#44; mesenteric and ileal varices mimicking an acute gastrointestinal hemorrhage have been reported&#46;<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">3</span></a> Therefore&#44; nuclear medicine physicians should be aware of potential false positives in order to improve diagnostic accuracy&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">To the best of our knowledge this is the first documented case of <span class="elsevierStyleSup">99m</span>Tc-RBC SPECT&#47;CT findings in a patient with gastric varices&#46; This case highlights the usefulness of SPECT&#47;CT to differentiate false positive cases in a patient with uncertain findings on the gastrointestinal bleeding scans&#46;</p></span>"
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Article information
ISSN: 22538089
Original language: English
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