PMC4996555_01
Axial (A) and coronal (B) CT slices demonstrating an atrophic left kidney without any identifiable mass or lesion.
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A CT scan of the abdomen and pelvis with and without contrast then demonstrated a markedly atrophic left kidney without any excretion of the contrast material into the collecting system (Fig. 1).
Low-power microscopy demonstrates cystically dilated tubules within a fibrotic stroma. Thyroidization and lymphoid follicles are noted in the surrounding atrophic renal parenchyma.
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The superior pole mass was analyzed and identified as a tubulocystic RCC, Fuhrman nuclear grade III/IV (Figs. 2 and 3).
There is a hobnail appearance to the lining of the tubules characteristic of tubulocystic renal-cell carcinoma. There are prominent nucleoli and abundant cytoplasm in these neoplastic cells.
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The superior pole mass was analyzed and identified as a tubulocystic RCC, Fuhrman nuclear grade III/IV (Figs. 2 and 3).