831403.fig.001a
(a)
831403.fig.001b
(b)
831403.fig.001c
(c)
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(e)
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(f)
Figure 1: Histological and immunohistochemical features of the papillary renal cell carcinoma. Low-power view shows the papillary structures with fibrovascular cores ((a), original magnification 100x). The columnar neoplastic cells have finely granular eosinophilic cytoplasm, bland nuclear feature. Foamy histiocytes are seen within the fibrovascular cores ((b), original magnification 400x). The neoplastic cells are positive for CK7 (c), vimentin (d), PAX-2 (e), and AMACR (f) (original magnification 400x).