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Philip R. Cohen, MD

Eric J. Vondrak, DO, Philip R. Cohen, MD, Amor Khachemoune, MD, FAAD, FACMS, Section Editor
A 73-year-old African American man presented with a dark keratotic plaque on the anterior surface of his ear. He also had white patches with central erythematous areas on his face and scalp that had been present for several year
Yoo Jung Kim, AB, Philip R. Cohen, MD, Amor Khachemoune, MD, FAAD, FACMS, Section Editor
A 61-year-old man presented with an intermittent soft mass on his left forearm. Cutaneous examination revealed a soft, blue, 10 mm x 10 mm, compressible, painless, subcutaneous nodule on the proximal extensor aspect of his left forearm.
Shi Tang, BA, Philip R. Cohen, MD
A 23-year-old healthy man presented with yellow thickening on the palmar surface of his third, fourth, and fifth digits of both hands located at the metacarpophalangeal joints. 
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