The American Society of Dermatopathology

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Interactive Case Study - February 2017

A 68-year-old female with 10 x 10 cm thigh mass

Neshat Nilforoushan, MD; Savita Ries, MD

Question 1:

A 68-year-old female with history of melanoma presented with a 10 x 10 cm right thigh mass.

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Figure 1. 2X

Figure 2. 4X

Figure 3. 10X

Figure 4. 20X

Figure 5. 

Figure 6. 

Which of the following is the best diagnosis?