Pulmonary Arteriovenous Fistulas, also known as pulmonary arteriovenous fistula, is related to hereditary hemorrhagic telangiectasia and pulmonary arteriovenous malformation. An important gene associated with Pulmonary Arteriovenous Fistulas is ENG (Endoglin). The drug Liver Extracts has been mentioned in the context of this disorder. Affiliated tissues include liver and brain.