PMC5645000_01
Abdominal CT with contrast showing large malignant hypervascular left renal mass with exophytic component of the lower pole and central area of necrosis with no venous invasion.
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A CT scan of the abdomen and pelvis showed a 16 x 10 x 8 left renal mass which was initially presumed to be a renal cell carcinoma Fig. 1.
A gross sample of the resected tumor. In the lower left is a microscopic sample with H&E stain and immunohistochemistry in the lower right.
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Tumor cells were positive only for CD99 and Vimentin Fig. 2.
Chest CT showing a small nodule worrisome for metastatic disease.
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The chest CT revealed small nodules in both lungs worrisome for metastatic disease Fig. 3.