The American Society of Dermatopathology

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Interactive Case Study - July 2013

Subcutaneous nodule on the neck

L. David Hall, MD; Tammie Ferringer, MD

Question 1:

Clinical history: A 70-year-old man presented with a subcutaneous nodule on the neck. The histology is shown in Figures 1-4.

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Which of the following is the best diagnosis?