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

Figure 2

(a)-(d) Gross image and representative microscopic images: (a) Solid and cystic mass with a tan-brown cut surface involving the lower pole of the kidney. (b) Representative illustration from the dominant portion of the tumor, an eosinophilic variant of ChC containing relatively uniform cells with distinct borders and central nucleus. (c)-(d) A minor component of tumor with a tubulocystic morphology, marked cellular atypia, and hobnail nuclear features, in keeping with CDC, low, and high magnifications provided.

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