PMC6811761_01
Abdominopelvic spiral CT scan: a 38 mm x 30 mm x 43 mm hypodense solid mass
was found in midpole of the left kidney that enhanced after administration
of contrast material.
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Abdominopelvic spiral CT scan demonstrated a 38 mm x 30 mm x 43 mm hypodense solid mass in the midpole of the left kidney that enhanced after administration of contrast material (Figure 1).
Sections from renal mass show hyper cellular tumor with trabecular and
nesting pattern. Individual tumor cells show salt and pepper nuclei
(H&EX 250).
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Histo-pathologic examination indicated monomorphic cells with trabecular and nesting pattern (Figure 2).
IHC shows positive chromogranin (diffuse and strong).
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Immunohistochemistry was positive for chromogranin and synaptophysin and negative for other renal cell carcinoma (RCC) markers (Figure 3).
IHC for Ki67 is low (<3%).
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Proliferative index by Ki67 was low (Figure 4).