Rapidly growing extensive polypoid endometriosis after gonadotropin-releasing hormone agonist discontinuation: A case report

Figure 6 Histopathological analysis and immunohistochemical examination of the resected specimen. A-C: Hepatic encephalopathy 10 ×, 20 ×, and 40 ×, respectively. Endometrial stroma and glands are observed in the cyst, and extensive haemorrhagic foci are shown without typical thick-walled blood vessels; D: Represents P16, and the visible part of the endometrial glands is positive [immunohistochemistry (IHC) 20 ×]; E: CD10 and endometrial stromal expression is strongly positive, but the glands are negative (IHC 20 ×); F: Represents the oestrogen receptor, with the endometrial glands strongly positive and the stroma partially positive (IHC 20 ×).