Endometriosis of bladder after menopause.

We report a rare case of endometriosis of the bladder in a 68-year-old postmenopausal woman. The patient had not received any exogenous estrogen therapy and the hormone levels were normal for a castrated female subject. Endometriosis of the bladder should be considered as a cause of an abnormal mass of the bladder even after menopause. This case documents that urinary involvement by endometriosis may persist even after years of a hormonally castrated state.