Trophoblastic Tumor, Placental Site
Trophoblastic Tumor, Placental; Placental Site Trophoblastic Tumor; Placental Trophoblastic Tumor; Placental Trophoblastic Tumors; Placental-Site Trophoblastic Tumors; Trophoblastic Tumor, Placental-Site; Trophoblastic Tumors, Placental
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.