[Congenital valves and diaphragms of the urethra in adult men. A series of 16 observations (author's transl)].

The authors studied 16 adult men with congenital valves and diaphragms in the urethra, and stress that: --their frequency is greater than is commonly stated; --they have serious effects on the upper urinary tract; --they are often difficult to diagnose radiologically; --they are responsible for some cases of difficulty in ejaculation which are wrongly considered to be cases of lack of ejaculation; --endoscopy play a fundamental role in their diagnosis and treatment, --excellent results are obtained with endoscopic treatment.