This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
Most common ovarian malignancy in post menopausal period is 
Select and explain. 
A. Serous cystadenoma, B. Fibroma/thecoma, C. Teratoma, D. Mucinous tumor
A: Serous cystadenoma
Answer: A: Serous cystadenoma 
Explanation: Ans a Ref: Sheila balakrishnan page 256Epithelial tumor: Majority are seen in post menopausal woman, peak incidence between 50-60.30-40:peak incidence of borderline tumorsLess common under 40 yrsMost common epithelial tumor is serous cystadenoma followed by mucinous.Sex cord stromal tumors: can occur at all ages Germ cell tumors: common among children, young adults