French National Cohort of Children With Port Wine Stain

Prospective national study, including 16 Pediatric and Dermatologic Departments. Methods : each children with a port wine stain on a lower limb will be followed up for 5 years. Collected data : demographic data, clinical features, alterations of RASA1 gene, vascular evaluation by ultrasonographic and orthopedic evaluation by X rays, quality of life with a questionnaire. Inclusion period = 3 years Follow up period = 5 years Population = 150 children