[Rare retrovesical tumor manifestation of cystic echinococcosis (Echinococcus granulosus)].

Unclear pelvic retrovesical intraperitoneal tumors can be caused by cystic echinococcosis. A definitive diagnosis of this disease is highly problematic und often requires a qualified histological/parasitological assessment. It is not possible to diagnose or exclude a cystic echinococcosis purely on the basis of a serological diagnosis. A multiple organ infection can be excluded using CT diagnostics as described in this case. The Robert Koch Institute has to be notified in the case of a positive result.