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=> "Primer caso de absceso renal por <span class="elsevierStyleItalic">Parvimonas micra</span>" ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Perirenal abscesses usually present as an infrequent complication of urinary tract infections,<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">1</span></a> and may be secondary to bacteraemia. In the past, the erroneous and late diagnosis produced high mortality, reaching up to 20–50%. Currently, with the use of modern imaging techniques, an earlier diagnosis is achieved and, together with the optimal drainage of the abscess and antibiotic treatment, mortality is very low.<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">2</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">We present the case of a 65-year-old man who went to the emergency department for fever of up to 39<span class="elsevierStyleHsp" style=""></span>°<span class="elsevierStyleSmallCaps">C</span> which had been ongoing for four weeks, chills, weight loss of 5<span class="elsevierStyleHsp" style=""></span>kg and abdominal pain in the lower left flank, with a history of a tooth extraction which was performed three weeks prior to the onset of symptoms. The patient did not have urinary symptoms. Among the lab results, the following stood out: CRP (100.5<span class="elsevierStyleHsp" style=""></span>mg/l), procalcitonin (6.88<span class="elsevierStyleHsp" style=""></span>ng/ml) and neutrophilia. Renal ultrasound showed the presence of bilateral simple renal cysts with no other pathological findings. Urine and blood cultures were taken, empirical intravenous antibiotic therapy was started with meropenem and vancomycin and the patient was admitted. Renal CT scan showed left perirenal abscess (6<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>5<span class="elsevierStyleHsp" style=""></span>cm) with extension to spleen, posterior pararenal space and fascias, but the drainage of the renal lesion was not possible due to the lack of organised collections suitable for puncture. The echocardiogram showed no images compatible with valvular endocardial vegetation, ruling out endocarditis. The urine culture was negative. At 41.27<span class="elsevierStyleHsp" style=""></span>h the anaerobic blood culture bottle was positive, gram-positive cocci were observed in chains and a blood agar was taken in anaerobiosis, in which whitish and dwarf colonies grew at 96<span class="elsevierStyleHsp" style=""></span>h and were identified as <span class="elsevierStyleItalic">Parvimonas micra</span> by MALDI-TOF <span class="elsevierStyleItalic">(Vitek MS®</span>). The antibiogram (ATB ANA EU, <span class="elsevierStyleItalic">bioMérieux</span>) showed susceptibility to amoxicillin, amoxicillin-clavulanic acid, clindamycin, imipenem, metronidazole, penicillin, piperacillin, piperacillin/tazobactam, ticarcillin, ticarcillin/clavulanate and vancomycin, so the treatment was modified to ertapenem and clindamycin. The renal CT scan performed 10 days after admission showed a modest decrease in size (3.7<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>2.6<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>4.9<span class="elsevierStyleHsp" style=""></span>cm) and abscess density and the patient was discharged 25 days after admission. He completed the intravenous treatment for seven more weeks and then took oral clindamycin for six weeks until he was cured.</p><p id="par0015" class="elsevierStylePara elsevierViewall"><span class="elsevierStyleItalic">Parvimonas micra</span> is an anaerobic gram-positive coccus, which is part of the normal flora of the mouth, respiratory and upper digestive tract, genitourinary system and skin. Its pathogenic potential has been discussed for years, although it is now known to cause opportunistic infections: brain and epidural abscesses, bacteraemia, endocarditis, necrotising pneumonia and septic abortion, among others.<a class="elsevierStyleCrossRefs" href="#bib0060"><span class="elsevierStyleSup">3–5</span></a> After searching in PubMed with the words <span class="elsevierStyleItalic">Parvimonas micra/Peptostreptococcus micros</span> and renal abscess we have not found any documented case, hence the relevance of this case report. Perirenal abscess is characterised by the presence of nonspecific signs and symptoms such as: fever, lumbar pain, vomiting, abdominal pain with tenderness to palpation and flank mass with irradiation to the leg, coinciding with the symptoms presented by our patient.<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">6</span></a> The main route of infection is ascending, which is why it is associated with late complications of a urinary infection, especially urolithiasis. For this reason, the bacteria involved most frequently are <span class="elsevierStyleItalic">Escherichia coli</span>, <span class="elsevierStyleItalic">Klebsiella pneumoniae</span> and <span class="elsevierStyleItalic">Proteus</span> spp., although cases of renal abscess due to <span class="elsevierStyleItalic">Staphylococcus aureus</span> have been documented.<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">7</span></a> Occasionally, the symptoms may be suggestive of acute pyelonephritis with febrile syndrome and unilateral flank pain that does not improve with the treatment of acute pyelonephritis.<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">8</span></a> Pyuria and proteinuria may be associated, but urine analysis is normal in up to 30% of cases with negative urine cultures in up to 40%, as occurred in our case. In the patient, the abscess appeared as a consequence of a bacteraemia of oral origin, since he had undergone a tooth extraction, which secondarily gave rise to the septic metastatic implant in the retroperitoneal, renal and splenic region, possibly favoured by the presence of previous renal cysts. The risk factors associated with this condition are: diabetes mellitus, urethral obstruction, vesicoureteral reflux, immunosuppression or parenteral drug use,<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">9</span></a> none was present in our case, which makes us assess the opportunistic potential of <span class="elsevierStyleItalic">Parvimonas micra</span>. With all this, we can conclude that an early diagnosis and optimal treatment is essential to achieve a favourable evolution.</p></span>" "pdfFichero" => "main.pdf" "tienePdf" => true "NotaPie" => array:1 [ 0 => array:2 [ "etiqueta" => "☆" "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as: Garrido-Jareño M, Frasquet-Artes J, Tasias-Pitarch M, López-Hontangas JL. Primer caso de absceso renal por <span class="elsevierStyleItalic">Parvimonas micra</span>. Enferm Infecc Microbiol Clin. 2019;37:140–141.</p>" ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0015" "bibliografiaReferencia" => array:9 [ 0 => array:3 [ "identificador" => "bib0050" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Perinephric abscess" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:3 [ 0 => "J.D. Thorley" 1 => "S.R. 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