Emphysematous pyelonephritis: a case report and review of the literature.

Emphysematous pyelonephritis is a rare and life-threatening suppurative infection of renal parenchymal and perirenal tissues, characterized by spontaneous gas production. Although uncommon (76 cases in the literature), it occurs almost exclusively in diabetic patients (87% of the cases). We describe a recent case of a diabetic woman with emphysematous pyelonephritis due to E. coli, successfully managed with unilateral nephrectomy. Symptoms, diagnostic approach and management are discussed and related to the previously reported series.