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Related Concept Videos

Accessory Structures of the Skin: Nails01:05

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Dermis
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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
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Articles linked to this work by shared authors, journal, and citation graph.

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Characterizing Dermoscopic Features of Longitudinal Melanonychia in Skin of Color.

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Pigmented onychomatricoma: Four cases.

Jorge Ocampo-Garza1,2, Nilton Gioia Di Chiacchio2,3, Nilton Di Chiacchio3

  • 1Dermatology Department, 'Dr José Eleuterio González' University Hospital, Autonomous University of Nuevo León, Monterrey, México.

The Australasian Journal of Dermatology
|March 24, 2017
PubMed
Summary

Onychomatricoma (OM) rarely appears as longitudinal melanonychia. This study details four pigmented OM cases, highlighting clinical and dermoscopic features for accurate diagnosis and differentiation from melanoma.

Keywords:
longitudinal melanonychianailnail tumouronychomatricomapigmented onychomatricoma

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Area of Science:

  • Dermatology
  • Oncology
  • Pathology

Background:

  • Onychomatricoma (OM) is a benign tumor of the nail matrix.
  • Longitudinal melanonychia is a common finding, but OM presenting as such is rare.

Observation:

  • This report describes four cases of pigmented Onychomatricoma.
  • Clinical and dermoscopic examinations were performed for each case.

Findings:

  • Pigmented OM can mimic other nail matrix conditions.
  • Dermoscopy aids in distinguishing OM from melanoma and other causes of longitudinal melanonychia.

Implications:

  • Accurate diagnosis of pigmented OM is crucial to avoid unnecessary aggressive treatment.
  • Increased awareness of this rare presentation is needed among clinicians.