Gestational choriocarcinoma is a gestational trophoblastic tumor (GTT) occurring secondary to pregnancy (ectopic or normal), miscarriage, voluntary termination of pregnancy (VTP) or a hydatidiform mole. The disease is Monarch Disease Ontology id MONDO_0020550 (gestational choriocarcinoma). Also known as: gestational choriocarcinoma (morphologic abnormality), gestational chorionepithelioma, molar pregnancy with choriocarcinoma.