It is known that women who are obese are at higher risk of endometrial cancer (cancer of the lining of the uterus or womb). The goal of this clinical research study is to find out how common abnormalities of the endometrium are in women who are considered obese and to find out if those same abnormalities are less common in women who are considered to be thin. Researchers would like to learn if obese patients have symptoms (like irregular menstrual cycles) that may mean there could be an abnormality present. Researchers would also like to know if obese women have access to regular female exams and whether they routinely go to their primary care doctors.