Parsia Vazirnia

What Is The Cause Of This Red Scalp Nodule?
Parsia Vazirnia, Philip R. Cohen, MD, Amor Khachemoune, MD, FAAD, FACMS, Section Editor
A 63-year-old man presented for evaluation of a new asymptomatic lesion on his head. His past medical history was significant for renal cell carcinoma, diagnosed 15 years earlier, with subsequent treatment and no further evidence of residual disease.
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