Fig. 4
From: Low-grade appendiceal mucinous neoplasm and endometriosis of the appendix
a Appendiceal mass biopsy at low power (×40 magnification) showing evidence of the low-grade appendiceal mucinous neoplasm (marked by green arrow) and endometriosis (marked by blue arrow). b High power view (×200 magnification) of an endometrial gland, exhibiting simple cuboidal epithelium surrounded by endometrial stromal cells with spindle appearance (hematoxylin and eosin stain)