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  • Title: Do you know this syndrome? Dyspigmentation along the Blaschko lines caused by trisomy 7 mosaicism.
    Author: Gouveia MP, Coutinho I, Teixeira V, d'Oliveira R, Venâncio M, Moreno A.
    Journal: An Bras Dermatol; 2016; 91(6):837-839. PubMed ID: 28099615.
    Abstract:
    Dyspigmentation along the Blaschko lines is strongly suggestive of a mosaic skin disorder. We report a 9-year-old male patient who presented with swirls and streaks of both hypo and hyperpigmentation involving the entire body. Additionally, he had hypertrichosis, musculoskeletal and minor neurodevelopment abnormalities but no intellectual disability. Cultured fibroblast displayed trisomy 7 mosaicism, which can explain this pigmentary phenotype. Widespread dyspigmentation associated with involvement of other organs should prompt systemic examination to detect additional anomalies and genetic evaluation should be considered, even with normal fetal karyotype.
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