title: Pulmonary A-V communications in COPD.
mesh_terms: D001165:Arteriovenous Malformations / Q000175:diagnosis*; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis*; D011651:Pulmonary Artery / Q000002:abnormalities*; D011667:Pulmonary Veins / Q000002:abnormalities*