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JAMA Dermatology Clinicopathological Challenge
September 23, 2020

Skin-Colored Nodule on the Scalp of a Middle-Aged Man

Author Affiliations
  • 1Department of Dermatology and Sexually Transmitted Diseases, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
  • 2Pathology Consultancy Services B-6, Sector 27, Noida, Uttar Pradesh, India
JAMA Dermatol. Published online September 23, 2020. doi:10.1001/jamadermatol.2020.3527

An otherwise healthy man in his 40s presented with a 3-month history of an asymptomatic nodule on his scalp. There were no systemic complaints, history of arthropod bite, immunosuppression, travel abroad, or contact with animals in the recent past. Physical examination revealed a skin-colored, firm, nontender, freely mobile 2 × 1.5-cm nodule with overlying normal skin on the right occipital region of the scalp (Figure, A). There was no lymphadenopathy. No other cutaneous lesions were present.

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