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
The risk of complex hyperplasia of endometrium with atypia progressing to malignancy in a postmenopausal woman is : 
Select and explain. 
A. 3%, B. 8%, C. 15%, D. 29%
D: 29%
Answer: D: 29% 
Explanation: WHO classification of Progression to Carcinoma The risk of complex hyperplasia of endometrium with atypia progressing to malignancy in a postmenopausal woman is 29% Reference : Textbook of Gynaecology; Sheila balakrishnan; 2nd edition; pg no: 248