This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following is a non-molar trophoblastic neoplasm? \nSelect and explain. \nA. Complete hydatidiform mole, B. Paial hydatidiform mole, C. Invasive mole, D. Choriocarcinoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: GTD histologically is divided into hydatidiform moles, which are characterized by the presence of villi, and non-molar trophoblastic neoplasms, which lack villi.Nonmolar trophoblastic neoplasms include choriocarcinoma, placental site trophoblastic tumor,and epithelioid trophoblastic tumor.Reference: William&;s Obstetrics; 25th edition; Chapter 20; Gestational trophoblastic diseases', 'role': 'assistant'}]