PMC4770081_01
Computed tomography scan showing the left renal mass.. Note: (A) is arterial phase and (B) is venous phase.
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CT exhibited heterogeneous density and showed that the renal capsule was invaded by the tumor (Figure 1). Calcification was also observed in the tumor.
Tumor cells with eosinophilic cytoplasm with inconspicuous nucleoli and rare appearance of mitosis.. Note: Stained with Hematoxylin and eosin; magnification x100.
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The tumor cells possessed eosinophilic cytoplasm with inconspicuous nucleoli, and mitosis was rare (Figure 2).
Immunohistochemical staining showing strong and diffuse staining for NSE, Syn, and CgA.. Note: Magnifications x100.. Abbreviations: CgA, chromogranin A; NSE, neuron-specific enolase; Syn, synaptophysin.
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Immunohistochemical staining showed strong and diffuse staining for synaptophysin, chromogranin A, and neuron-specific enolase (Figure 3).