Endometriosis of the duplex appendix: A case report and review of the literature

Figure 3 Histopathological appearances of the endometriosis in appendix, small intestine, and ovary. A: Hematoxylin and eosin (HE) staining shows that ectopic endometrial-type glands and stroma (thick arrows) were detected in the muscular layers (thin arrows) of the appendix (×40); B: Ectopic endometrial-type glands and stroma (thick arrows) were observed in the subserosa of the small intestine. The muscular layers are indicated by thin arrows (HE, ×40); C: Higher magnification of endometriosis (thick arrows) in the ovary (HE, ×100).