Clinical, dermoscopic, and pathologic features of onychopapilloma: A review of 47 cases

Antonella Tosti, Samantha L. Schneider, Mae N. Ramirez-Quizon, Martin Zaiac, Mariya Miteva

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Background Onychopapilloma is a benign neoplasm of the nail bed and the distal matrix. Although not uncommon in our experience, only up to 32 cases of this tumor have been reported in the literature. Objective We sought to review the clinical, dermoscopic, and pathologic features of onychopapilloma. Methods We retrospectively analyzed the clinical features of 47 patients with pathologically confirmed onychopapilloma diagnosed within the last 5 years, and reviewed the published literature. Results The most common clinical presentation was longitudinal erythronychia (n = 25); followed by longitudinal leukonychia (n = 7); longitudinal melanonychia (n = 4); long splinter hemorrhages without erythronychia, leukonychia, or melanonychia (n = 8); and short splinter hemorrhages without erythronychia, leukonychia, or melanonychia (n = 3), with subungual mass (n = 47) and distal fissuring (n = 11). Pathology was consistent with acanthosis of the nail bed and distal matrix, with matrix metaplasia underlying distal subungual hyperkeratosis. Limitations This was a retrospective analysis. Conclusion To our knowledge, our series of onychopapilloma is the largest so far. Among various clinical presentations, longitudinal erythronychia is the most common. Dermoscopy of the free edge of the nail plate showing a small subungual keratotic mass where the band reaches the nail plate margin provides a clue for the diagnosis.

Original languageEnglish (US)
Pages (from-to)521-526
Number of pages6
JournalJournal of the American Academy of Dermatology
Volume74
Issue number3
DOIs
StatePublished - Mar 1 2016

Keywords

  • nail
  • nail bed
  • nail dermoscopy
  • nail matrix
  • nail pathology
  • nail tumor

ASJC Scopus subject areas

  • Dermatology

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