Gestational trophoblastic disease (GTD) comprises a group of disorders spanning the premalignant conditions of complete and partial molar pregnancies (also known as hydatidiform moles) through to the malignant conditions of invasive mole, choriocarcinoma and the very rare placental site trophoblastic tumour (PSTT) and epithelioid trophoblastic tumour (ETT). The malignant potential of atypical placental site nodules (PSNs) remains unclear.
This is a companion discussion topic for the original article at https://patient.info/doctor/gestational-trophoblastic-disease