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Fig. 4 | Chinese Journal of Cancer

Fig. 4

From: Erythrocytosis caused by giant chromophobe renal cell carcinoma: a case report indicating a 9-year misdiagnosis of polycythemia vera

Fig. 4

Immunohistochemical examination of the tumor with specific antibodies. Immunohistochemical staining of the tumor section shows a strong positivity for cytokeratin 7 in both the cytoplasm and membrane, b negative Vimentin expression, c negative CD10 expression in both the cytoplasm and membrane, and d middle to strong positivity for erythropoietin (EPO) in the cytoplasm. The results confirmed the diagnosis of chromophobe renal cell carcinoma and EPO production of the tumor

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