[Urinary retention caused by large cyst of the Müllerian duct (author's transl)]

The rare case of urinary retention caused by a large Müllerian duct cyst in a 41-year-old man is described. The embryological fundaments and frequency of these cysts are discussed as well as the necessary diagnostic steps and operative procedures. A survey of the literature is presented and the different diagnostic findings in these and other cystic tumors of the male pelvis are shown.