Prevalence of precancerous skin lesions and non-melanoma skin cancer in Japanese-Brazilians in Bauru, São Paulo State, Brazil

Cadernos de Saúde Pública

Priscila Ishioka¹  Sílvio Alencar Marques²  Amélia Toyomi Hirai¹  Mariangela E. A. Marques²  Sérgio Henrique Hirata¹  Sérgio Yamada¹ 

[1] ,Universidade Federal de São Paulo Escola Paulista de Medicina São Paulo,Brasil

关键词: Skin Neoplasms;    Skin Manifestations;    Solar Radiation;    Neoplasias Cutâneas;    Manifestações Cutâneas;    Radiação Solar;   

DOI  :  10.1590/S0102-311X2009000500003

来源: SciELO

【 摘 要 】

Precancerous lesions and skin cancer are infrequent in Asians, and have received little documentation in the literature. Brazil has the world's largest contingent of Japanese immigrants and their descendants, and 70% live in the State of São Paulo. The prevalence of such skin lesions in Japanese-Brazilians is unknown. This study aimed to assess the prevalence of actinic keratoses and non-melanoma skin cancer in first and second-generation Japanese-Brazilians over 30 years of age, without miscegenation, living in the city of Bauru, São Paulo State, in 2006. Of the 567 Japanese-Brazilians that underwent dermatological examination, actinic keratosis was diagnosed in 76, with a mean age of 68.9 years, and a single case of basal cell carcinoma was detected in a 39-year-old female patient. In Japan, prevalence of actinic keratosis varies from 0.76% to 5%, and the incidence of non-melanoma skin cancer is 1.2 to 5.4/100 thousand. Japanese-Brazilians from Bauru showed a 13.4% prevalence of actinic keratoses and earlier age at onset. Proximity to the Equator and a history of farming contribute to these higher rates. Presence of solar melanosis was associated with a 1.9-fold risk of developing actinic keratosis.

【 授权许可】

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