PMC5266817_01
MRI in the axial (a) and sagittal (b) planes showing a soft tissue ethmoid mass extending to the right and left choanal region, the right orbit, the right frontal sinus, and an initial intracranial extension with partial erosion of the crista galli.
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fig1
MRI confirmed the evidence found at computed tomography (Figure 1).
The excised mass; histological exam was consistent with a clear cell renal cell carcinoma.
CRIOT2017-9242374.002.jpg
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fig2
The histological exam revealed a clear cell renal cell carcinoma (Figure 2).