Fig. 5From: Esophageal metastasis of renal cell carcinoma resected by endoscopic submucosal dissection: a case reportA The tumor (5 × 4 mm) present in the subepithelium with focal infiltration to the muscularis mucosa (arrow) (2 × , hematoxylin–eosin stain). B The tumor comprised monotonous cells with small nuclei and a clear cytoplasm (20 × , hematoxylin–eosin stain). C The tumor cells were immunohistochemically positive for CD10Back to article page