Postmenopausal Deep Infiltrating Endometriosis of the Colon: Rare Location and Novel Medical Therapy

Figure 3

(a) Staining of the colonic nodule shows active proliferative endometrial glands and stromal tissue (hematoxylin and eosin, 40x). (b) Immunohistochemistry demonstrates diffusely positive staining for the estrogen receptor in a pattern consistent with endometrial tissue (100x).

(a)

(b)