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  Indian J Med Microbiol
 

Figure 2: Macroscopic, microscopic, and immunohistochemical findings. Macroscopy: The sectioned gross specimen shows a brown colored tumor, the solid tumor with a well-defined and lobulated contour exhibiting hemorrhagic areas (a), microscopic findings: encapsulated, hypercellular tumor with papillary structures, perivascular pseudorosettes (b and c) (H and E, ×40 and ×200 respectively), immunohistochemistry for glial fibrillary acidic protein (d) (immunoperoxidase, ×400), and epithelial membrane antigen (e) (immunoperoxidase, ×400), the tumor shows a moderate Ki-67 staining index with an average of 10% (f) (immunoperoxidase, ×100)

Figure 2: Macroscopic, microscopic, and immunohistochemical findings. Macroscopy: The sectioned gross specimen shows a brown colored tumor, the solid tumor with a well-defined and lobulated contour exhibiting hemorrhagic areas (a), microscopic findings: encapsulated, hypercellular tumor with papillary structures, perivascular pseudorosettes (b and c) (H and E, ×40 and ×200 respectively), immunohistochemistry for glial fibrillary acidic protein (d) (immunoperoxidase, ×400), and epithelial membrane antigen (e) (immunoperoxidase, ×400), the tumor shows a moderate Ki-67 staining index with an average of 10% (f) (immunoperoxidase, ×100)