text: According to the Féderation Internationale de Gynécologie et d’Obstétrique (FIGO) cancer<unk>  system, there are 4 stages of<unk><unk><unk>  (GTN).
option_0: Gestational trophoblastic neoplasia staging
option_1: Gestational trophoblastic neoplasia classification
option_2: Prenatal diagnosis
option_3: Fetal screening
option_4: Endometrial hyperplasia classification
option_5: Gestational diabetes classification
option_6: Seminoma screening
option_7: Gestational trophoblastic neoplasia laboratory findings