Gynaecology & Obstetrics Gestational Trophoblastic Disease fae43903 Hydatidiform mole is principally a disease of: A Amnion B Chorion C Uterus D Decidua High-Yield Explanation Ans. is b, i.e. ChorionRef. Dutta 7/e, p 190Now don't tell me you want me to explain this--H mole is a benign neoplasm of chorion with malignant potential