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Onychocytic matricoma

Onychocytic matricoma is a newly described tumor of the nail matrix. Clinically, it presents with localized thickening of the nail plate and melanonychia. Histologically, it represents a benign acanthoma of onychocytes. There are 8 cases reported in the literature. A 12-year-old girl presented with...

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Autores principales: d'Almeida, Luiza Ferreira Vieira, Jeunon, Thiago, Leverone, Andreia Pizarro, Nakamura, Robertha
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade Brasileira de Dermatologia 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6486071/
https://www.ncbi.nlm.nih.gov/pubmed/31090828
http://dx.doi.org/10.1590/abd1806-4841.20197865
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author d'Almeida, Luiza Ferreira Vieira
Jeunon, Thiago
Leverone, Andreia Pizarro
Nakamura, Robertha
author_facet d'Almeida, Luiza Ferreira Vieira
Jeunon, Thiago
Leverone, Andreia Pizarro
Nakamura, Robertha
author_sort d'Almeida, Luiza Ferreira Vieira
collection PubMed
description Onychocytic matricoma is a newly described tumor of the nail matrix. Clinically, it presents with localized thickening of the nail plate and melanonychia. Histologically, it represents a benign acanthoma of onychocytes. There are 8 cases reported in the literature. A 12-year-old girl presented with localized melanonychia and concurrent thickening of the nail plate restricted to the area of pigmentation affecting the right thumb, with no history of trauma or pain. We report a case of this rare tumor occurring in late childhood and provide a comprehensive review of its clinical presentation and differential diagnosis. Both clinicians and dermatopathologists should be aware of the presentation of onychocytic matricoma and include it in their scope of diagnosis of longitudinal nail bands.
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spelling pubmed-64860712019-04-30 Onychocytic matricoma d'Almeida, Luiza Ferreira Vieira Jeunon, Thiago Leverone, Andreia Pizarro Nakamura, Robertha An Bras Dermatol Case Report Onychocytic matricoma is a newly described tumor of the nail matrix. Clinically, it presents with localized thickening of the nail plate and melanonychia. Histologically, it represents a benign acanthoma of onychocytes. There are 8 cases reported in the literature. A 12-year-old girl presented with localized melanonychia and concurrent thickening of the nail plate restricted to the area of pigmentation affecting the right thumb, with no history of trauma or pain. We report a case of this rare tumor occurring in late childhood and provide a comprehensive review of its clinical presentation and differential diagnosis. Both clinicians and dermatopathologists should be aware of the presentation of onychocytic matricoma and include it in their scope of diagnosis of longitudinal nail bands. Sociedade Brasileira de Dermatologia 2019 /pmc/articles/PMC6486071/ /pubmed/31090828 http://dx.doi.org/10.1590/abd1806-4841.20197865 Text en http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivative License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium provided the original work is properly cited and the work is not changed in any way.
spellingShingle Case Report
d'Almeida, Luiza Ferreira Vieira
Jeunon, Thiago
Leverone, Andreia Pizarro
Nakamura, Robertha
Onychocytic matricoma
title Onychocytic matricoma
title_full Onychocytic matricoma
title_fullStr Onychocytic matricoma
title_full_unstemmed Onychocytic matricoma
title_short Onychocytic matricoma
title_sort onychocytic matricoma
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6486071/
https://www.ncbi.nlm.nih.gov/pubmed/31090828
http://dx.doi.org/10.1590/abd1806-4841.20197865
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