Endometriosis (en-doe-me-tree-O-sis) is an often-painful disorder in which tissue that normally lines the inside of your uterus, the endometrium grows outside your uterus. Endometriosis most commonly involves your ovaries, fallopian tube and the tissue lining your pelvis. Rarely, endometria tissue may spread beyond pelvic organs. With endometriosis, displaced endometrial tissue continues to act as it normally would, it thickens, breaks…
