Mesometrium refers to the portions of the broad ligament of the uterus that contain the uterine vessels and nerves. Synonyms for mesometrium include broad ligament, uterine ligament, and mesometrial ligament. The broad ligament is a broad fold of peritoneum that attaches the uterus, fallopian tubes, and ovaries to the pelvic sidewall. It houses the uterine artery and vein, lymphatics, nerves, and other structures. The uterine ligament is a band of connective tissue that supports the uterus and attaches it to the pelvis. The mesometrial ligament is the part of the broad ligament that extends from the uterus to the lateral pelvic wall.