Fig. 3
From: Endometriosis in a kidney with focal xanthogranulomatous pyelonephritis and a perinephric abscess
Photomicrographs of sections of kidney. a Endometrial glands and stroma with thyroidization of adjacent tubules and chronic inflammatory infiltrates in the interstitium (hematoxylin and eosin stain H&E, ×100 magnification), b endometrial glands, stromal cells and spiral arterioles (hematoxylin and eosin stain H&E, ×200 magnification), c positive estrogen receptor staining in stromal cell nuclei (immunohistochemical method IHC, ×200 magnification), d positive progesterone receptor staining in stromal cell nuclei (Immunohistochemical method IHC, ×200 magnification)