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  Indian J Med Microbiol
 

Figure 1 :Sino nasal undiff erenti ated carcinoma: Sheets of oval to spindly cells admixed with lymphoid cells. Inset shows comedo-necrosis patt ern [fi g 1a] (H and E; x100). The undiff erenti ated cells have prominent nucleoli, abundant apoptosis [fi g 1b] (H and E; x200). Tumor cells show immunoreacti vity with cytokerati n and weakly with neuron-specifi c enolase (fi gure 1c and 1d respecti vely; IHC;x 200)

Figure 1 :Sino nasal undiff erenti ated carcinoma: Sheets of oval to spindly cells admixed with lymphoid cells.
Inset shows comedo-necrosis patt ern [fi g 1a] (H and E; x100). The undiff erenti ated cells have prominent
nucleoli, abundant apoptosis [fi g 1b] (H and E; x200). Tumor cells show immunoreacti vity with cytokerati n
and weakly with neuron-specifi c enolase (fi gure 1c and 1d respecti vely; IHC;x 200)