[Renal oncocytoma. Three case reports]

Renal oncocytoma represents a rare benign tumor accounted for 3-5% of renal neoplasms. It has been mistaken for and mistabled as granular or dark cell carcinoma. Between 1993 and 1998, 3 women with renal oncocytoma were recognized at formation and underwent radical nephrectomy. Sonography and the CT scan was performed but the Accurate diagnosis was not possible before performing surgery and histologic investigations. The mean Follow-up of 3 patients was 48 month and showed a benign clinical behaviour in all cases.