Synchronous sporadic bilateral multiple chromophobe renal cell carcinoma accompanied by a clear cell carcinoma and a cyst: A case report

Figure 6 A 50-year-old male with pathologically proven chromophobe renal cell carcinoma in the left kidney. A: Hematoxylin and eosin staining showing tumor cells were arranged in solid nests and gland pattern with thick-walled blood vessels, clear cell membrane, reticulated cytoplasm, and “raisinoid” nuclear membranes (100 ×); B: Immunohistochemical staining showing negative expression of carbonic anhydrase 9 (100 ×); C: Cluster of differentiation 117 was moderately diffusely positive in the cytoplasm/membrane (100 ×); D: Cytokeratin 7 was strongly diffusely positive in the cytoplasm/membrane (100 ×).