Subepithelial hematoma of the renal pelvis (Antopol-Goldman lesion): a case report and review of the literature.

A 45-year-old woman presented with gross hematuria and pain in the right flank. Blood was found in the right renal pelvis with bleeding from the lower pole of the kidney. Partial nephrectomy revealed hematomas in and about the pelvis and calices, confirming the diagnosis of Antopol-Goldman lesion. The cause of the lesion remains uncertain, although renal trauma superimposed on a hyperplastic pelvic capillary network, secondary to analgesic abuse, is suspected.