Peritoneal factor infertility refers to abnormalities involving the peritoneum (lining of the surfaces of your internal organs) such as scar tissue (adhesions) or endometriosis, a condition where tissue that normally lines the uterus begins to grow outside the uterus.
This tissue may grow on any structure within the pelvis including the ovaries and is found in about 35% of infertile women who have no other diagnosable infertility problem.
Endometriosis is found more commonly in women with infertility, pelvic pain, and painful intercourse. Endometriosis may affect the function of the ovaries, your ovarian reserve, the function of the fallopian tubes, as well as implantation..