Histology of excised specimen. (a) Excised sample consisting of uterus, bilateral adnexa, vaginal wall, and rectosigmoid colon. The uterus contained multiple fibroids. The cul-de-sac tumors (arrow head) were located in the center of the specimen. (b) Endometrioid carcinoma (arrow head) invading the muscularis propria of the sigmoid colon and adjacent DIE (arrow) (H&E staining ×20). (c) Glands contiguous, but no sequential transition observed (H&E staining ×200). (d) Excised endometrium showing complex endometrial hyperplasia without atypia (H&E staining ×200). DIE, deep infiltrating endometriosis.