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
Choriocarcinoma metastasizes most commonly to: March 2012 
Select and explain. 
A. Vagina, B. Lungs, C. Liver, D. Brain
B: Lungs
Answer: B: Lungs 
Explanation: Ans: B i.e. Lungs Metastasis of choriocarcinoma Vaginal metastases forms in 30% of cases of choriocarcinoma The most common metastases in choriocarcinoma are seen in lungs (80%), brain and liver (10%).