The World Health Organisation classification divides trophoblast disease into the pre-malignant and malignant forms as shown below:-
- Pre-Malignant
- Partial Molar Pregnancy
- Complete Molar Pregnancy
- Malignant
- Invasive mole
- Choriocarcinoma
- Placental Site Trophoblastic Tumours
- Epithelial Trophoblast Tumours