Question 1:
A biopsy of an asymptomatic nodule on the cheek of a 55-year-old male shows the following histopathology (Figures 1-5) and immunohistochemical stains (Figures 6-9).
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Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6. p63
Figure 7. BerEP4
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Figure 8. SOX 10
Figure 9. Vimentin
Given the morphologic and immunohistochemical findings, what is the most appropriate diagnosis?