| Clinical Information | ||
| 42 year-old male, history of squamous cell carcinoma invasive or in situ on multiple locations since 2000. | ||
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| HE, 2× | HE, 4× | |
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| HE, 10× | HE, 10× | |
 |  | |
| HE, 10× | HE, 20× | |
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| HE, 20× | HE, 40× | |
 |  | |
| HE, 10× | HE, 10× | |
 |  | |
| HE, 20× | HE, 20× | |
 |  | |
| HE, 40× | HE, 40× | |
| Source: Department of Pathology, Creighton University Medical Center, Omaha, NE Photo: Zenggang Pan Discussion: Zenggang Pan | ||