Danazol in the treatment of ureteral endometriosis.

We report 2 cases of ureteral endometriosis in which initial hormonal management, including danazol, failed to reverse or to stop the progressing ureteral stenosis. After reviewing the various methods of treatment presented in the literature we conclude that solid documentation of the effect of danazol against ureteral endometriosis is lacking. To preserve kidney function we recommend resection of the affected portion of the ureter.