Fig. 2

a Photograph of the specimen with scale (cm); b Photograph of the specimen with longitudinal incision exposing vesicles; c Low magnification micrograph of the invasive complete hydatiform mole component (hematoxylin and eosin): two enlarged chorionic villi associated with a trophoblastic proliferation invading the vessels and the muscular wall of the uterus (bottom left); d high magnification micrograph of a suspected choriocarcinomatous component (hematoxylin and eosin): large syncitiotrophoblasts associated with a proliferation of atypical intermediate cytotrophoblasts