This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Villous pattern is lost in : 
Select and explain. 
A. Invasive mole, B. Tubal mole, C. Hydatidiform mole, D. Choriocarcinoma
D: Choriocarcinoma
Answer: D: Choriocarcinoma 
Explanation: Choriocarcinoma