Xanthogranulomatous pyelonephritis in a 7-year-old girl

Abstract

The paper presents a case history of xanthogranulomatous pyelonephritis that developed in a 7-year-old girl in combination with urolithiasis background. Our available sources for the last 50 years contain only 283 descriptions of pediatric xanthogranulomatous pyelonephritis (XGP) cases. We were able to find in domestic publications descriptions of two clinical observations of histologically proven XGP in children of 15 and 17 years. Clinical manifestations of the disease, radiological imaging data, and laboratory findings during the initial three months of the condition fit the disease pattern of a diffuse acute pyelonephritis. A remarkable peculiarity of the presented case was in the two-month interval during which the girl with a severe destructive renal process remained under medical supervision as an outpatient, suffered no pain, and had normal urinalysis results. Nephrectomy was performed from lumbotomy access considering clinical manifestations, data from laboratory and radiological isotope studies. The postoperative period was complicated by the development on the 2nd day of acute perforation of a duodenal ulcer. The intensity of perinephric process was unique and never encountered in our earlier practice. The described changes made kidney exposure extremely difficult. Therefore, nephrectomy should be carried out exclusively in the national highly specialized pediatric urological centers.