Uterine cancer refers to any type of cancer that originates in the uterus. The uterus is a pear-shaped organ located in a woman's pelvic region, and it plays an important role in pregnancy and childbirth. There are several types of cancers that can affect the uterus, including endometrial cancer (cancer of the lining of the uterus), uterine sarcoma (cancer of the muscular tissue of the uterus), and cervical cancer (which originates in the cervix, the lower part of the uterus). These types of cancers are often treated differently depending on their location and severity.