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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Oral Surg Oral Med Oral Pathol Oral Radiol. 2013 Jun 14;116(3):327–335. doi: 10.1016/j.oooo.2013.04.011

Figure 1.

Figure 1

HPV+ oropharyngeal carcinoma shows both small cell and squamous cell components in Case #7. A) Hematoxylin and eosin staining shows SmCC (left) and SCC (right). B) SmCC component (left) shows expression of synaptophysin. C) SCC component expresses p63; SmCC exhibits loss of p63 expression. D) HPV exists in both components as seen by p16 expression. Images are 200× magnification