title: Childhood subungual melanoma in situ in diffuse nail melanosis beginning as expanding longitudinal melanonychia.
abstract: We report a rare childhood occurrence of melanoma in situ presenting as diffuse nail pigmentation resulting from expanding longitudinal melanonychia, and discuss factors that should come into play when considering a possible nail matrix biopsy.
authors.affiliation: Division of Dermatology, University of Louisville, Louisville, Kentucky, USA.
authors.forename: Diana D
authors.initials: DD
authors.lastname: Antonovich
authors.forename: Caron
authors.initials: C
authors.lastname: Grin
authors.forename: Jane M
authors.initials: JM
authors.lastname: Grant-Kels
mesh_terms: D002278:Carcinoma in Situ / Q000175:diagnosis / Q000473:pathology; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D005385:Fingers; D006801:Humans; D008545:Melanoma / Q000175:diagnosis* / Q000473:pathology; D009260:Nail Diseases / Q000175:diagnosis* / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology