
Endometriosis is a condition in which the lining of the uterine cavity (endometrium) grows outside of the uterus. Endometriosis can be found anywhere in the pelvic cavity, including all the reproductive organs as well as on the bladder, small bowel, colon, rectum, appendix, and vagina. However, endometriosis cannot be considered simply as misplaced endometrium, because it differs in hormonal responses and visual appearance.

