What Is Bowel Endometriosis?

Colorectal endometriosis is a disease caused by active endometrial tissue leaving the uterine cavity and invading the colon, rectum and anal canal. Among them, the rectum and sigmoid colon are most easily affected, followed by the ileocele. Lesions often involve the serosa layer first, then invade the intestinal muscle layer, and rarely destroy the mucosa, but transmural infiltration can cause mucosal ulcers and even perforations. The disease is more common in menstruating women, occasionally in menopausal women, and rarely seen in male patients receiving long-term estrogen therapy.