Renal endometriosis. A case report.

In a 23-year-old woman with lumbar pain, an expansive process in the right kidney was demonstrated by I.V.P., retrograde pyelography and renal angiography. The histological examination subsequent to nephrectomy showed endometriosis in association with localized xanthogranulomatous pyelonephritis. Renal endometriosis has been described only eight times previously in the literature. The current case is discussed and compared with previous reports.