Bloom's syndrome (homozygous null mutation in BLM DNA repair enzyme. similar mechanism & etiology to ataxia telangiectasia.) Naevus flammeus (port-wine stain) Klippel-Trenaunay syndrome Maffucci's syndrome (multiple enchondromas & hemangiomas) Hereditary hemorrhagic telangiectasia (Osler-Weber-Rendu syndrome) Ataxia-telangiectasia Sturge-Weber syndrome, a nevus formation in the skin supplied by the trigeminal nerve and associated with facial port-wine stains, glaucoma, meningeal angiomas and intellectual disabilities Hypotrichosis–lymphedema–telangiectasia syndrome, caused by mutation in transcription factor SOX18[3]