Cholesteatoma of the renal pelvis: endoscopic management.

We report 2 cases of renal cholesteatoma, 1 of which was associated with inactive renal tuberculosis and the other with urinary stone disease. Both cases were managed by endourological techniques. The diagnosis of cholesteatoma was suspected at ureteroscopic examination of the renal pelvis and it was confirmed by histological examination of biopsy material in both cases. Treatment consisted of endoscopic extraction of the keratinous debris from the collecting system. In 1 case this was achieved with the ureteroscope and in the other case the nephroscope was used.