Unilateral facial telangiectases suggest type 1 segmental manifestation of Osler-Rendu-Weber syndrome in an 11-year-old boy.

An 11-year-old boy revealed multiple telangiectases confined to the left cheek and the left side of the lips. Additionally, unilateral epistaxis was present. Radiological examinations of the brain, lungs and abdomen were normal and bleeding of the gastrointestinal tract was excluded. In this case, we propose a probable segmental type 1 manifestation of the autosomal dominantly inherited Osler-Weber-Rendu syndrome.