[Gestational trophoblastic disease].

Gestational trophoblastic disease encompresses a group of interrelated diseases, following a pregnancy after a variable period of time. Hydatiform mole corresponds to premalignant disorders composed of villi with excess of paternal genetic material, with a malignant potential more important for complete mole than partial mole. Gestational trophoblastic neoplasia includes invasive mole, choriocarcinoma, placental site trophoblatic tumor and epithelioid trophoblastic tumor. Their histological diagnosis may be problematic on curettage material and needs to be correlated to serum hCG level and radiological findings. The use of chemotherapy has dramatically improved the prognosis of these lesions. All patients with this rare disease need to be registered in the national service for gestational trophoblastic disease (http://www.mole-chorio.com), which coordinates their management at the national level.