Dermatoscopia na pele negra: estudo comparativo dos nevos melanocíticos adquiridos em pacientes com fototipos v e vi versus i e ii

• Ano de defesa: 2015
• Autor(a) principal: Tuma, Bruna [UNIFESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de São Paulo (UNIFESP)
• Palavras-chave em Português: dermoscopy; ethnic groups; melanocytic nevi; melanoma; dermoscopia; grupos étnicos; nevos melanocíticos
• Link de acesso: https://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=2967250; https://repositorio.unifesp.br/handle/11600/46616

BLACKGROUND: The identification of "normal" dermoscopic pattern of acquired melanocytic nevi (AMN) provides a better diagnostic accuracy of melanoma in people with black skin. OBJECTIVE: Describe melanocytic lesions (number and anatomical distribution) in skin types V and VI (ST V/VI) compared to skin types I and II (ST I/II) according to Fitzpatrick's classification. Identify differences in dermoscopic findings of acquired melanocytic nevi (global pattern, pigment and color distribution) between the groups. METHODS: Cross-sectional, prospective and consecutive data collection in two dermatological outpatient clinic, between October 8, 2010, and March 20, 2013. From the 501 volunteers, 480 participants fullfilled the eligibility criteria. A total of 460 acquired melanocytic nevi were selected for dermoscopy analysis. RESULTS: The individuals with ST V/VI had less melanocytic lesions than those with ST I/II (15,08 vs 7,90, p=0,032), and the anatomical distribution in the first group was predominantly in the face and acral sites (p<0,001). The AMN in the group ST V/VI were associated with reticular pattern (p<0.0001), tendency to central hyperpigmentation (p=0.0025). LIMITATIONS: Choice of a single representative nevus per patient. CONCLUSION: The AMN in the individuals with ST V/VI has a distinct dermoscopic pattern from those with ST I/II.