Longitudinal melanonychia biopsy: What not to do

Jorge Ocampo-Garza, Joana Mendes Bretas, Daiane Matana, Paula Jacomini Sobral, Curtis T. Thompson, Martin Zaiac, Antonella Tosti

Research output: Contribution to journalArticlepeer-review


The nail matrix biopsy is an important technique in confirming or excluding a diagnosis of melanoma in a patient with longitudinal melanonychia. Dermatologists are the first-line diagnosticians for these pigmented lesions of the nail unit, however, for different reasons, some are reluctant to perform a nail biopsy. This case demonstrates how a poor biopsy technique resulted in a misdiagnosis in a patient with melanoma in situ.

Original languageEnglish (US)
Pages (from-to)587-588
Number of pages2
JournalJournal of Drugs in Dermatology
Issue number5
StatePublished - May 2018

ASJC Scopus subject areas

  • Medicine(all)


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