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  • Title: [Body distribution and density of acquired melanocytic nevi in adolescents of low socioeconomic status of Santiago, Chile].
    Author: Zemelman D V, Molina C P, Valenzuela CY, Honeyman M J.
    Journal: Rev Med Chil; 2008 Jun; 136(6):747-52. PubMed ID: 18769831.
    Abstract:
    BACKGROUND: There is an increase in the incidence of malignant melanoma in Chile. Previous studies have shown that the density and size of acquired melanocytic nevi (AMN) are a risk factor for developing malignant melanoma. AIM: To assess the number and anatomical distribution of acquired melanocytic nevi in Chilean adolescents. MATERIAL AND METHODS: The number of AMN was counted in 30 anatomical sites in 201 Chilean school children (111 females), aged from 11 to 15 years. The number of small AMN (2-4.9 mm) and large AMN (>5 mm of diameter) was determined. RESULTS: Mean AMN number per person was 32.7 (95% confidence interval (CI) 30.7-42.3) in males and 29 (95% CI 271-38.6) in females (p =NS). Males had a higher number of AMN in the face, neck and trunk. Females had a higher number of AMN in the upper and lower limbs. Older children, adolescents with history of sunburns and with lighter skin had a higher number of total, small and large nevi. CONCLUSIONS: The average number of AMN found in this study is similar to that reported in the literature. The differences in site distribution between males and females may be explained by a different sun exposure pattern.
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