Endometrial cancer in young, normal-weight women

As expected, a significantly higher proportion of obese and overweight women had diabetes and irregular menstrual cycles. Among the normal-weight women, a high proportion were nulliparous, had a history of infertility, irregular menstrual cycles and synchronous tumors of the endometrium and ovary when compared with the general population. This suggests that hormonal factors, and possibly polycystic ovarian syndrome (PCOS), may contribute to the development of endometrial cancer in young normal-weight women.