Gestational Trophoblastic Tumor

**Semantic type:** Neoplastic Process

**Definition:** A diverse group of pregnancy-related tumors characterized by excessive proliferation of trophoblasts. It includes gestational choriocarcinoma, epithelioid trophoblastic tumor, placental site trophoblastic tumor, and mixed trophoblastic tumor.

**Synonyms:** - GTT - gestational trophoblastic neoplasia - gestational trophoblastic tumor