Classificação do melasma pela dermatoscopia: estudo comparativo com lâmpada de Wood / Classification of melasma by dermoscopy: comparative study with Wood's lamp
Surg. cosmet. dermatol. (Impr.)
;
1(3): 115-119, Jul.-Set. 2009. ilus.
Article
Dans Anglais, Portugais
| LILACS
| ID: biblio-884356
RESUMO
Introdução:
O melasma representa a principal hipermelanose facial, sendo dermatose de considerável impacto psicossocial. Sob a lâmpada de Wood, a profundidade do pigmento melânico determina a fluorescência. Sob o exame dermatoscópico, a cor da melanina varia de acordo com sua localização nas camadas da pele.Objetivo:
Avaliar a classificação do melasma através da dermatoscopia e correlacioná-la à classificação sob a lâmpada de Wood. b>Material emétodos:
Análise de concordância entre os dois métodos na classificação do melasma. Quarenta pacientes foram avaliados por examinadores experientes através da lâmpada de Wood (Burton®) e dermatoscopia (videodermatoscópio BleyMed-Skincam® aumento 40x) e/ou dermatoscópio manual (3Gen Dermlite II ProHR® 10x), de forma independente. Pela dermatoscopia, considerou-se como tipo epidérmico coloração acastanhada e rede pigmentar regular; dérmico coloração cinza azulada e rede irregular, e misto áreas compatíveis com ambos.Resultados:
O grau de concordância entre os métodos foi considerado fraco (k < 0,2) pela análise estatística.Conclusão:
Os autores consideraram a dermatoscopia mais apropriada, pois evidenciou de forma objetiva os componentes pigmentares.ABSTRACT
Introduction:
Melasma is the main cause of facial hyperchromia and has a signifi cant psychosocial impact. Wood´s lamp has been a useful device to estimate the depth of melanin determined by light-induced fl uorescence. A dermoscope enables a clear visualization of pigments distribution, and the color variation of melanin will depend on its location within the skin.Objective:
Evaluate the classifi cation of melasma according to the depth of melanin by dermoscopy and to correlate the dermoscopic fi ndings with its classifi cation using Wood's lamp. Material andmethods:
Analysis of concordance between dermoscopy and Wood's lamp in the classifi cation of melasma. Forty patients were evaluated by expert examiners independently, using a Wood's lamp (Burton® UVA 360nm LE T5 4W BLB) and dermoscopy (Bley Med-Skincam® 40x or 3Gen Dermlite II ProHR® 10x). The melasma was considered epidermal when a regular pigment network, with a brownish homogeneous pigmentation was found; it was considered dermal when an irregular and mixed network with bluish-gray pigmentation was found; and it was considered mixed when the areas show both features.Results:
The degree of concordance between the methods was considered weak (k < 0.2) by statistical analysis.Conclusions:
The authors consider the dermoscopy more suitable, since it allowed the visualization of the pigmentary components in a more objective way.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
langue:
Anglais
/
Portugais
Texte intégral:
Surg. cosmet. dermatol. (Impr.)
Thème du journal:
Chirurgie générale
/
Dermatologie
Année:
2009
Type:
Article
Pays d'affiliation:
Brésil
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