The American Society of Dermatopathology

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Interactive Case Study - March 2014

45-year-old female with a finger mass (with zoomable virtual slide)

Gina Johnson MD; Jerad M. Gardner, MD

Question 1:

Clinical history:

A previously healthy 45-year-old female presented with a slowly enlarging, painless, ill-defined 2.5-cm mass located on the dorsum of the left first finger. An excisional biopsy was performed. 

Click this image to view the zoomable slide. 

Figure 1.

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Figure 6.

What is the diagnosis?