Kidney specimens and tumor histopathology. Kidney specimens from a patient who underwent simultaneous bilateral nephrectomy and histopathologic findings of the left kidney tumor. (A) Right kidney measured 26 × 16 × 13cm and left kidney measured 28 × 17 × 13cm. (B) Cross-section of the left kidney shows a slightly yellow solid tumor (arrow). (C) Hematoxylin-eosin stain, original magnification × 100 and (D) hematoxylin-eosin stain, original magnification × 400 show papillary renal cell carcinoma with large columnar cells with eosinophilic cytoplasm and edematous or fibrous thick stalks.