At microscopic examination, we observed an endometrial tissue developped in the cecal subserosa and muscularis mucosa(a), with irregular endometrial glands (b), and characteristic stroma positive for CD10 immunostaining (c). Epithelial cells are positive for CK7(d). Moreover, endometrial and stromal cells expressed both estrogen receptors (e) and progestative receptors (f).
Emmanuel et al. Diagnostic Pathology 2012 7:62 doi:10.1186/1746-1596-7-62