Echinococcus granulosus – An open hydatid cyst

France, Delage Alix

The hydatid cyst is usually fluid-filled and has a germinative inner lining. From it, protoscoleces budd off into the lumen, or remain attached to the germinative wall. The floating scoleces often enlarge, become vesicular, and develop into daughter floating colonies within the parent cyst.