Uterine cancer is a disease in which cancer cells grow in the uterus. The walls of the uterus are made of 2 types of lining. The endometrium is the inner lining and the myometrium is the muscular, outer lining. The most common type of uterine cancer (adenocarcinoma) begins in the endometrium. Less common cancers, called sarcomas, begin in the myometrium.
This fact sheet will focus on endometrial cancer.
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Cancer occurs when cells in the body divide without control or order. Normally, cells divide in a regulated manner. If cells keep dividing uncontrollably when new cells are not needed, a mass of tissue forms, called a growth or tumor. The term cancer refers to malignant growths. These growths can invade nearby tissues. Cancer that has invaded nearby tissues can then spread to other parts of the body.
Exposure to estrogen seems to be strongly related to the development of endometrial cancer. It is not clear exactly what causes changes in the cells, but is probably a combination of genetics and environment.
Last reviewedDecember 2014by Mohei Abouzied, MD, FACP
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.