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  Indian J Med Microbiol
 

Figure 2: (a) Oncocytic variant of papillary renal cell carcinoma (OPRCC) well delineated from the adjacent uninvolved kidney (×40); (b) papillary cores showing foamy macrophages (arrow head, ×100); and (c) uniformly arranged nuclei as seen in type 1 PRCC (×100); (d) while other areas showing papillae lined by cells exhibiting nuclear pseudostratification as seen in Type 2 PRCC (×100); (e) Focal areas show reverse polarity of the nuclei (arrow, ×100); (f) Many of the tumor cells show hemosiderin deposition (inset) as highlighted by Perls stain (×100); (g) Focally, tumor cells show cytoplasmic clearing (arrow, ×100); (h) On immunohistochemistry, the tumor cells are uniformly positive for vimentin (×40) and (i) CD10 (×100)

Figure 2: (a) Oncocytic variant of papillary renal cell carcinoma (OPRCC) well delineated from the adjacent uninvolved kidney (×40); (b) papillary cores showing foamy macrophages (arrow head, ×100); and (c) uniformly arranged nuclei as seen in type 1 PRCC (×100); (d) while other areas showing papillae lined by cells exhibiting nuclear pseudostratification as seen in Type 2 PRCC (×100); (e) Focal areas show reverse polarity of the nuclei (arrow, ×100); (f) Many of the tumor cells show hemosiderin deposition (inset) as highlighted by Perls stain (×100); (g) Focally, tumor cells show cytoplasmic clearing (arrow, ×100); (h) On immunohistochemistry, the tumor cells are uniformly positive for vimentin (×40) and (i) CD10 (×100)