This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gynaecological oncology, Subject name: Gynaecology & Obstetrics
[{'content': 'Most common histological subtype of cancer endometrium is : \nSelect and explain. \nA. Mucinous carcinoma, B. Clear cell carcinoma, C. Squamous cell carcinoma, D. Endometrioid adenocarcinoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Histologically most of the endometrial cancers are Adenocarcinomas Hence they are called endometriod adenocarcinoma About 10-15% are Papillary serous Clear cell Adenosquamous Pure squamous Ref : Shaw Gynecology 17e pg 434.', 'role': 'assistant'}]