Perforating colonic duplication as rare cause of renal abscess in children.

Renal abscess is uncommon in children. In a few cases, ascending infection and/or hematogenous spread have been outlined as pathophysiologic mechanisms in published studies. We report on a 7-month-old female infant who was hospitalized with a high fever. Ultrasonography revealed a hypoechogenic mass in the left kidney. The diagnosis of a renal abscess was confirmed by computed tomography. Because antibiotic treatment had only a transient effect, an open operative procedure was performed. Intraoperatively, a perforating colonic duplication with broad contact to the kidney was found that had destroyed major parts of the kidney's parenchyma. After nephrectomy and complete resection of the colonic duplication, the patient recovered uneventfully.