The risk of endometrial cancer is highest with the following histological pattern of endometrial hyperplasia :
Risk of endometrial cancer Simple hyperplasia without atypia: 1% Complex hyperplasia without atypia: 3% Simple hyperplasia with atypia: 8% Complex hyperplasia with atypia: 29%
Simple hyperplasia without atypia
Simple hyperplasia with atypia
Complex hyperplasia without atypia
Complex hyperplasia with atypia
Gynaecological oncology