Question 1:
Clinical History
A 69-year-old man presented with a tender papule on his neck that had been present for several months. A shave biopsy was performed.
Click this image to view the virtual slide
Figure 1 - 4.1X H and E
Figure 2 – 7.2X H and E
Figure 3 – 6.0X S-100 stain
Figure 4 – 6.0 X Pancytokeratin
Which of the following is the best diagnosis?