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NEGATIVE: chromogranin A, CK5/6, TTF-1, napsin A. | NEGATIVE: chromogranin A, CK5/6, TTF-1, napsin A. | ||
</pre> | </pre> | ||
====Micro==== | |||
The sections show large cells epithelioid cells (~3-4x the size of a lymphocyte) with salt and pepper chromatin, scant basophilic cytoplasm, and focally streaming. Mitotic activity is brisk and multifocal zonal necrosis is present. | |||
==See also== | ==See also== |
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