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)](articles/2010/53/1/images/IndianJPatholMicrobiol_2010_53_1_28_59179_u5.jpg)