PMID: 25735087Mar 5, 2015Paper

Case of a 14-year-old boy with chronic tubulointerstitial nephritis first diagnosed as acute focal bacterial nephritis

Nihon Jinzo Gakkai shi
Norimasa TadaYaeko Motoyoshi

Abstract

A 14-year-old boy was admitted to a general hospital because of prolonged fever of unknown origin. After Enterococcus feacalis was detected from his urine and abdominal contrast enhanced computed tomography and 99m-Tc dimercaptosuccinic acid scintigram showed multiple focal defects, he was diagnosed as acute focal bacterial nephritis (AFBN). His condition recovered as a result of Ampicillin (ABPC)and Cefotaxime infusion. There was no specific finding in voiding cystography. Six months later, his fever recurred and he was diagnosed as refractory AFBN because Enterococcus feacalis was detected in his urine again. He was treated with ABPC and Meropenem (MEPM) infusion, but the fever persisted and his renal function deteriorated. He was transferred to our hospital for intensive treatment. On admission, blood examination showed findings of inflammation (WBC 14,400/μL, CRP 3.7 mg/dL, erythrocyte sedimentation rate : 69 mm/h, IgG : 2,107 mg/dL) and renal impairment (Cr : 1.8 mg/dL, cystatin C : 2.0 mg/L). Although neither pyuria nor pathogenic bacteria were detected in his urine, Enterococcusfeacalis was detected at the hospital where he had been treated previously, hence we started treatment for AFBN with ABPC, MEPM, Levofloxacin, th...Continue Reading

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