[Alveolar echinococcosis (fox tapeworm)-a surprising diagnosis in a patient with epididymal tumor].

Alveolar ecchinococcosis, caused by the fox tapeworm (echinococcosus multilocularis), is in principle a lethal illness. We report on a 31-year-old man presenting with an unclear epididymal tumor, in whom further examinations revealed multiple and extended partially cystic, partially solid intra-abdominal tumors. Diagnosis was achieved histologically by percutaneous biopsy of a spleen lesion and serologically. As a surgical resection of the lesions was not feasible, therapy with albendazol was initiated.