Scanning electron microscopy of tinea nigra

被引：5

作者：

Guarenti, Isabelle Maffei ^{[1
]}

de Almeida, Hiram Larangeira, Jr. ^{[1
,2
]}

Leitao, Aline Hatzenberger ^{[3
]}

Rocha, Nara Moreira ^{[4
]}

Marques e Silva, Ricardo ^{[5
]}

机构：

[1] Univ Catolica Pelotas, Pelotas, RS, Brazil

[2] Fed Univ, Pelotas, RS, Brazil

[3] Catholic Univ Porto Alegre, Porto Alegre, RS, Brazil

[4] EMBRAPA CPA CT, Pelotas, RS, Brazil

[5] Univ Fed Pelotas, Pelotas, RS, Brazil

来源：

ANAIS BRASILEIROS DE DERMATOLOGIA | 2014年 / 89卷 / 02期

关键词：

Bacterial infections and mycoses; Dermatomycoses; Fungi; Mycoses; Microscopy; electron; scanning; DEMATIACEOUS FUNGI; HORTAEA-WERNECKII;

D O I：

10.1590/abd1806-4841.20142780

中图分类号：

R75 [皮肤病学与性病学];

学科分类号：

100206 ;

摘要：

Tinea nigra is a rare superficial mycosis caused by Hortaea werneckii. This infection presents as asymptomatic brown to black maculae mostly in palmo-plantar regions. We performed scanning electron microscopy of a superficial shaving of a tinea nigra lesion. The examination of the outer surface of the sample showed the epidermis with corneocytes and hyphae and elimination of fungal filaments. The inner surface of the sample showed important aggregation of hyphae among keratinocytes, which formed small fungal colonies. The ultrastructural findings correlated with those of dermoscopic examination - the small fungal aggregations may be the dark spicules seen on dermoscopy - and also allowed to document the mode of dissemination of tinea nigra, showing how hyphae are eliminated on the surface of the lesion.

引用

页码：334 / 336

页数：3

共 23 条

[1]

Almeida Junior H. L. de, 2000, Anais Brasileiros de Dermatologia, V75, P639

[2] Tinea nigra by Hortaea werneckii, a report of 22 cases from Mexico [J].