title: Changing pigmentation in a solitary scalp lesion.
abstract: A healthy 66 year-old man presented with a complaint of changes within a nodule on the scalp, which had first appeared over 10 years prior. He had no previous history of skin cancer. On physical examination a solitary, asymmetric, purple-black nodule with irregular borders was identified on the right vertex of his scalp. The remainder of his examination did not reveal any additional lesions.
authors.affiliation: Temple University Hospital.
authors.forename: Michelle L
authors.initials: ML
authors.lastname: Oros
authors.forename: Rosalie
authors.initials: R
authors.lastname: Elenitsas
authors.forename: Emily Y
authors.initials: EY
authors.lastname: Chu
mesh_terms: D000368:Aged; D006258:Head and Neck Neoplasms / Q000473:pathology*; D018251:Hidrocystoma / Q000473:pathology*; D006801:Humans; D008297:Male; D012535:Scalp; D012880:Skin Pigmentation; D013544:Sweat Gland Neoplasms / Q000473:pathology*