A Composite Renal Tumor with Dual Differentiation, Chromophobe and Collecting Duct Carcinoma

Figure 3

(a)-(d) Staining pattern of different tumor components: (a) positive intracellular staining with Hale colloidal iron in ChC. (b) CK7 stain highlighting both ChC and CDC components, at their emerging front. (c) While vimentin stain is negative in the ChC tumor cells, only highlighting vasculature, (d) it is diffusely positive in the CDC component.

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