Uterine choriocarcinoma showing typical highly hemorrhagic appearance.
Choriocarcinoma uterusChoriocarcinoma uterus
Note the typical highly hemorrhagic appearance of the tumor.There are both neoplastic cytotrophoblast and syncytiotrophoblast
ChoriocarcinomaThere is an intimate admixture of syncytiotrophoblast and cytotrophoblast in choriocarcinoma.
Choriocarcinoma uterus
Seen here is choriocarcinoma, which is much less common than HM. Villi are not present. Rather, there is a proliferation of bizarre trophoblastic cells. These tumors are very aggressive and are associated with very marked HCG levels. Half of choriocarcinomas arise in preceeding HMs.