Endometrial cancer is a type of cancer that begins in the lining of the uterus, known as the endometrium. It is the most common type of uterine cancer and primarily affects postmenopausal women. The exact cause of endometrial cancer is not known, but risk factors include obesity, hormone therapy, and certain genetic conditions. Symptoms of endometrial cancer may include abnormal vaginal bleeding, pelvic pain, and pain during intercourse. Treatment options for endometrial cancer typically include surgery, chemotherapy, radiation therapy, and hormone therapy, depending on the stage and severity of the cancer. Early detection and treatment can greatly improve the prognosis for patients with endometrial cancer.