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

Figure 5 A 50-year-old male with pathologically proven clear cell renal cell carcinoma in the right kidney. A: Hematoxylin and eosin staining showing nesting and tubular pattern of growth with eosinophilic cytoplasm in delicate vascular network, clear cytoplasm (100 ×); B: Immunohistochemical staining, carbonic anhydrase 9 was strongly diffusely positive in the cytoplasm/membrane (100 ×); C: Immunohistochemical staining showing negative expression of cluster of differentiation 117 (× 100); D: Immunohistochemical staining showing negative expression of cytokeratin 7 (100 ×).