Longitudinal subungual acanthoma: one denomination for various clinical presentations

Background Benign subungual proliferation of the distal nail matrix and bed such as longitudinal keratosis, seborrhoeic keratosis or onychocytic matricoma should belong to a single spectrum of diseases. Objective This article intends to demonstrate clinically and histologically the different facets...

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Veröffentlicht in:Journal of the European Academy of Dermatology and Venereology 2018-09, Vol.32 (9), p.1608-1613
Hauptverfasser: Baran, R., Moulonguet, I., Goettmann‐Bonvallot, S., Encaoua, R., Robert, C.
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container_end_page 1613
container_issue 9
container_start_page 1608
container_title Journal of the European Academy of Dermatology and Venereology
container_volume 32
creator Baran, R.
Moulonguet, I.
Goettmann‐Bonvallot, S.
Encaoua, R.
Robert, C.
description Background Benign subungual proliferation of the distal nail matrix and bed such as longitudinal keratosis, seborrhoeic keratosis or onychocytic matricoma should belong to a single spectrum of diseases. Objective This article intends to demonstrate clinically and histologically the different facets of Nail unit longitudinal acanthoma. Methods We report three new cases that present as a longitudinal melanonychia with thickening of the nail plate in two of them and as leukoxanthonychia in the third one. We compared them with the two original cases we described in 1999, reminiscent of seborrhoeic keratosis and all the new cases published since then. Results We therefore consider that all these tumours belong to a single spectrum of diseases, we have called ‘nail unit longitudinal acanthoma’ which describes a histopathological process. The distinct clinical features of these tumours, melanonychia or leukoxanthonychia may be linked to their variable anatomic locations in different zones of the nail unit.
doi_str_mv 10.1111/jdv.15017
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source MEDLINE; Wiley Online Library Journals Frontfile Complete
subjects Acanthoma - pathology
Aged
Female
Fingers
Humans
Male
Middle Aged
Nail Diseases - pathology
Skin Neoplasms - pathology
title Longitudinal subungual acanthoma: one denomination for various clinical presentations
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