<prompt> The risk of complex hyperplasia of endometrium with atypia progressing to malignancy in a postmenopausal woman is :381529  <response>: 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 