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
Most common uterine malignancy 
Select and explain. 
A. Leiomyosarcoma of uterus, B. Endometroid adeno carcinoma, C. Serous Uterine carcinoma, D. Clear cell carcinoma
B: Endometroid adeno carcinoma
Answer: B: Endometroid adeno carcinoma 
Explanation: 75 to 80 % of endometrial tumors are type1, which are endometroid adenocarcinomas.