[The functional obstruction of bladder neck (author's transl)].

The functional obstruction of bladder neck in male patients is a well-known and long-known entity. Etiology, natural history and mechanism of this condition are not yet fully understood. The patients suffer from obstructive symptoms since childhood. The results of a full radiological, urological and urodynamics assessment of 10 patients with such symptoms are presented. Diathermic incision of bladder neck was the therapy of choice. Retrograde ejaculation of seminal fluid was not observed. The prognosis of this disease is good. Uroflowmetry, cystometry and micturating cysto-urethrography are mandatory for the correct diagnosis.