[Congenital bulbular urethral constrictures. Pathogenesis and treatment of diseases of the bladder neck and urogenital border regions(author's transl)].

This paper is a survey of the literature concerning diseases of the bladder neck, posterior urethra and the urogenital border region. Urethrographic, uroflowmetric and urethrocystoscopic examinations of more than 200 patients ranging in age from one day to over 70 years demonstrated a clear-cut bulbular urethral constricture in this broad-spectrum disease picture. Its a congenital appearance is explained embryologically. A case analysis allows for classification based on the functional value of the urethral constricture. Diseases of as yet unexplained etiology such as Marion's disease, bladder neck sclerosis, urethral valves and chronic prostatitis-prostatopathy are clarified, based on the demonstrated urodynamics.