Patterns of nail matrix and bed of longitudinal melanonychia by intraoperative dermatoscopy

Patterns of nail matrix and bed of longitudinal melanonychia by intraoperative dermatoscopy

Author Hirata, Sergio Henrique Autor UNIFESP Google Scholar
Yamada, Sergio Autor UNIFESP Google Scholar
Enokihara, Mauro Yoshiaki Autor UNIFESP Google Scholar
Di Chiacchio, Nilton Google Scholar
Almeida, Fernando Augusto de Autor UNIFESP Google Scholar
Enokihara, Milvia Maria S. S. Autor UNIFESP Google Scholar
Michalany, Nilceo Schwery Autor UNIFESP Google Scholar
Zaiac, Martin Google Scholar
Tosti, Antonella Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Hosp Servidor Publ Municipal São Paulo
Univ Bologna
Abstract Background: the dermatoscopic examination of the nail plate has been recently introduced for the evaluation of pigmented nail lesions. There is, however, no evidence that this technique improves diagnostic accuracy of in situ melanoma.Objective: To establish and validate patterns for intraoperative dermatoscopy of the nail matrix.Methods: Intraoperative nail matrix dermatoscopy was performed in 100 consecutive bands of longitudinal melanonychia that were excised and submitted to histopathologic examination.Results: We identified 4 dermatoscopic patterns: regular gray pattern (hypermelanosis), regular brown pattern (benign melanocytic hyperplasia), regular brown pattern with globules or blotch (melanocytic nevi), and irregular pattern (melanoma).Limitations: Nail matrix dermatoscopy is an invasive procedure that can not routinely be performed in all cases of melanonychia.Conclusion: the patterns described present high sensitivity and specificity for intraoperative differential diagnosis of pigmented nail lesions. (J Am Acad Dermatol 2011;65:297-303.)
Language English
Date 2011-08-01
Published in Journal of the American Academy of Dermatology. New York: Mosby-Elsevier, v. 65, n. 2, p. 297-303, 2011.
ISSN 0190-9622 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 297-303
Access rights Closed access
Type Article
Web of Science ID WOS:000293311200005

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