Rectosigmoid Endometriosis Causing Large Bowel Obstruction.

Large bowel obstruction is most commonly due to colorectal carcinoma, diverticular disease or volvulus. Rare causes of large bowel obstruction like endometriosis may occur in premenopausal women and diagnosis of large bowel endometriosis can be challenging to confirm preoperatively. Hence, clinicians should maintain a high index of suspicion for rare causes of large bowel obstruction like endometriosis. This may require complete surgical resection of the involved bowel to eliminate the risk of local recurrence.