Week 544: Case 2

1. Presented by Peter Illei, M.D. and prepared by Mark Samols, M.D., Ph.D.

55 y.o. black male patient with an epidural mass and a recent lung biopsy read as poorly differentiated non-small cell carcinoma with necrosis. The current material is a biopsy of the epidural mass. The tumor exhibits patchy p63 positivity while a mucicarmine stain and immunostains for TTF-1, Napsin-A and p40 are negative.

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