**3. Locations**

The disease most commonly affects the ovaries and the pelvic peritoneum. DIE classically affects the rectovaginal septum and the uterine ligaments (69.2%), the vagina (14.5%), the rectosigmoid bowel (9.9%), and the bladder and ureter (6.4%) in the order of frequency. Rarely lungs and CNS may be involved.
