Retroperitoneal benign cystic teratoma in an adult. A case-report.

Cystic teratoma and dermoid cyst are benign germ eel tumors that contain ti ssues derived from all three embryonic lines. They are common in the ovary. Only a few cases have been reported in men, at various sites. A case is re ported of retroperitoneal benign cystic teratoma with ascites-like symptoms in a 24-year-old man. Imaging studies were suggestive since they showed cy stic lesions with heterogeneous contents occupying most of the abdominal ca vity and displacing the intestinal loops without modifying fold contours. H istology confirmed the diagnosis. Although remote, the possibility that som e cysts and tumors can imitate abundant ascites should be borne in mind. Th e management of these tumors relies mainly on surgery. The longterm prognos is of mature teratoma is excellent, as shown by the case reported here.