The American Society of Dermatopathology

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Interactive Case Study - December 2012

70-year-old man with a scrotal papule

Karen Nguyen Wu, MD

Question 1:

70-year-old man presents with an asymptomatic, 1.2 cm, keratotic plaque on the scrotum. The histopathology is shown in Figures 1-3.

Figure 1

Figure 2

Figure 3

What is the most likely diagnosis?