PMC65042_01
Computerized tomographic scans showing the right renal mass and lymphadenopathies in 1989 (upper) and in 1999 (lower).
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F1
His past medical history revealed a diagnosis of a right renal mass posterior to inferior vena cava in addition to a single lymph node 65 x 43 x 34 mm and 22 x 12 mm in diameters, respectively on computerized tomography (CT) in 1989 (Figure 1, upper). There was also evidence of invasion of right renal vein and inferior vena cava by the mass, and multiple paraaortic and precaval lymphadenopathies (Figure 1, lower).
Histopathological examination shows ribbons, trabeculae formation and mitotic activity (Hematoxylin-eosin, x40, right) and positive staining with chromogranine antibody of tumor cells (x200, left).
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F2
Histopathologically, tumor cells formed ribbons and trabeculae and necrotic foci were seen on hematoxylin eosin staining (Figure 2, right). Immunohistochemical examination using chromogranine antibody and a streptavidin-biotin technique (Dako Chemicals, London) revealed positive staining tumor cells (Figure 2, left).