The American Society of Dermatopathology

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Interactive Case Study - January 2017

66-year-old female with a scalp nodule

Viktoryia Kazlouskaya, MD, PhD ; Usha Alapati, MD

Question 1:

A 66-year-old female presented with a scalp nodule of unknown duraton. The nodule was well-circumscribed with no ulceration, inflammation, or bleeding. No tufts of hair were seen on the surface of the nodule.
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Which of the following is the best diagnosis?