PMC3350164_01
Computed tomography at the time of diagnosis. It showed a heterogeneously enhanced left renal mass 35 mm in diameter.
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After 2 years from the first operation, computed tomography (CT) scan showed an enlarging heterogenous left renal mass 35 mm in diameter (Figure 1).
A gross pathologic specimen. Sectioning revealed a light yellow well-circumscribed mass in the middle portion of the kidney, measuring 3.5 x 3.8 cm. The tumor contained the hemorrhage or necrosis at inside.
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Sectioning revealed a light yellow well-circumscribed mass in the middle portion of the kidney, measuring 3.5 x 3.8 cm (Figure 2).
Histologic appearance of junction between metastatic poorly differentiated adenocarcinoma (upper) and chromophobe renal cell carcinoma (lower), HE staining.
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Microscopically, the tumor was composed largely of two patterns of small oxyphilic granular cells and larger light translucent cells when using the hematoxylin and eosin (HE) staining (Figure 3 upper). However, within the chromophobe renal cell carcinoma, there were another foci of atypical cells arranged in high-columnar pattern (Figure 3 lower).