Telangiectasia, Hereditary Hemorrhagic, Type 3, also known as hereditary hemorrhagic telangiectasia type 3, is related to weber syndrome and juvenile polyposis syndrome. An important gene associated with Telangiectasia, Hereditary Hemorrhagic, Type 3 is HHT3 (Osler-Rendu-Weber Syndrome 3). Affiliated tissues include liver.