Adenocarcinoma of the endometrium is a morbid condition in women under 40 years of age with an incidence of 25%. However, patients with anovulatory polycystic ovarian syndrome are at risk of developing endometrial carcinoma. The disease is often advanced when diagnosed, thereby depriving the woman of the option for fertility sparing conservative approach. In young women with menstrual abnormalities and polycystic ovarian disease and/or infertility, an endometrial evaluation should be performed. Carcinoma endometrium should be kept in mind while evaluating young women with polycystic ovary syndrome for abnormal uterine bleeding. Only strictly selected patients should, therefore, be indicated for long-term progestogen treatment and careful evaluation before and after treatment should be performed.