Efficacy & Safety of LOBO™ Vascular Occlusion Device for Embolization of Pulmonary Arteriovenous Malformations

Inclusion Criteria: * At least 1 PAVM with a feeding artery ≥2 mm in diameter and a feeding artery amenable to the use of LOBO™ device (i.e. feeding artery length of ≥1 cm). Given the length of embolic devices including LOBO™, the proximal vessel length to the PAVM sac must be of sufficient size for embolization to be feasible. If patients have at least 1 PAVM where the feeding artery length is ≥1 cm, they are eligible for enrollment. * Patients with multiple PAVMs meeting eligibility criteria may be enrolled with the intent of embolizing multiple different PAVMs with the LOBO™ device in the same embolization session or in separate sessions. * Estimated Glomerular Filtration Rate \>30 ml/min * Per standard of care (SOC), all pregnant women to be enrolled must be in their 2nd or 3rd trimesters Exclusion Criteria: * Confounding bleeding disorders other than HHT * Life-threatening iodinated contrast allergy not amenable to prophylactic therapy with steroids * Underlying coagulopathy * Patients on anti-platelets or anti-coagulation medications