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  • Title: Neonatal blue light phototherapy increases café-au-lait macules in preschool children.
    Author: Wintermeier K, von Poblotzki M, Genzel-Boroviczény O, Vogel S, Schotten K, Berking C, Giehl KA.
    Journal: Eur J Pediatr; 2014 Nov; 173(11):1519-25. PubMed ID: 24942237.
    Abstract:
    UNLABELLED: Neonatal blue light phototherapy (NBLP) is an effective treatment for hyperbilirubinaemia. Concerning the influence on melanocytic nevi, conflicting studies have been published. To assess the role of NBLP according to the incidence of melanocytic nevi in preschool children, a cohort of 104 5- to 6-year-old children were included. The case group consisted of 52 NBLP-exposed children, while the control group (n = 52) never had NBLP and was matched regarding age, gender, gestational age and skin phototype. Six dizygotic twins were included with one twin having received NBLP, respectively. The following parameters were recorded: nevi count, presence of freckles, café-au-lait macules, skin phototype and previous history of sun exposure. There was no significant association between nevi count and exposure to NBLP (median nevi count 17.0 compared to 18.5 in controls). No significant difference was also found in the dizygotic twin pairs with a median nevi count of 10.0 (with NBLP) compared to 14.5 (without NBLP). However, a significantly higher prevalence of café-au-lait macules was found in children with NBLP (mean count 0.5) than in children without NBLP (mean count 0.2; p = 0.001). Significant predictors for the number of melanocytic nevi included skin phototype, sun exposure and vacations in the South. CONCLUSION: In this study, NBLP had no significant influence on the development of melanocytic nevi, but on café-au-lait macules which was a new finding. Differences with comparable studies regarding age, differentiation between nevi and other pigmented lesions as well as dose and type of NBLP need to be taken into account for further investigations.
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