RID4333 placental site trophoblastic tumor

synonym Chorionkarzinom der Plazenta PSTT

definition An uncommon variant of choriocarcinoma. It is composed almost entirely of mononuclear cytotrophoblasts (trophoblasts). Because its secretion of hCG (chorionic gonadotropin) is low, a large tumor may develop before the hCG can be detected. [MeSH]