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Pulmonary Arteriovenous Fistulae Differential Diagnoses

  • Author: Barry A Love, MD; Chief Editor: Howard S Weber, MD, FSCAI  more...
Updated: Jan 29, 2015

Diagnostic Considerations

Consider the diagnosis of pulmonary arteriovenous malformations (PAVM) in individuals with any of the following presentations: (1) 1 or more pulmonary nodules associated with typical chest radiographic findings of pulmonary arteriovenous malformations; (2) mucocutaneous telangiectases; (3) unexpected findings such as dyspnea, hemoptysis, hypoxemia, polycythemia, clubbing, cyanosis, cerebral embolism, or brain abscess.

Differential Diagnoses

Contributor Information and Disclosures

Barry A Love, MD Assistant Professor , Department of Medicine, Division of Cardiology, Assistant Professor, Division Pediatric Cardiology, Director, Pediatric Electrophysiology Service, Department of Pediatrics, Division of Pediatric Cardiology, Mount Sinai School of Medicine

Disclosure: Nothing to disclose.


Nao Sasaki, MBBS Assistant Professor of Clinical Pediatrics, University of Miami, Leonard M. Miller School of Medicine

Disclosure: Nothing to disclose.

Specialty Editor Board

Mary L Windle, PharmD Adjunct Associate Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Nothing to disclose.

Alvin J Chin, MD Emeritus Professor of Pediatrics, University of Pennsylvania School of Medicine

Alvin J Chin, MD is a member of the following medical societies: American Association for the Advancement of Science, Society for Developmental Biology, American Heart Association

Disclosure: Nothing to disclose.

Chief Editor

Howard S Weber, MD, FSCAI Professor of Pediatrics, Section of Pediatric Cardiology, Pennsylvania State University College of Medicine; Director of Interventional Pediatric Cardiology, Penn State Hershey Children's Hospital

Howard S Weber, MD, FSCAI is a member of the following medical societies: American Academy of Pediatrics, American College of Cardiology, Society for Cardiovascular Angiography and Interventions

Disclosure: Received income in an amount equal to or greater than $250 from: St. Jude Medical.

Additional Contributors

Charles I Berul, MD Professor of Pediatrics and Integrative Systems Biology, George Washington University School of Medicine; Chief, Division of Cardiology, Children's National Medical Center

Charles I Berul, MD is a member of the following medical societies: American Academy of Pediatrics, Heart Rhythm Society, Cardiac Electrophysiology Society, Pediatric and Congenital Electrophysiology Society, American College of Cardiology, American Heart Association, Society for Pediatric Research

Disclosure: Received grant/research funds from Medtronic for consulting.

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Mucosal telangiectasias are shown in a patient with hereditary hemorrhagic telangiectasia (HHT).
Left lower lobe arteriovenous malformation (AVM).
Lateral radiograph showing a left lower lobe arteriovenous malformation (AVM).
Large left lower lobe arteriovenous malformation (AVM) showing a feeding vessel to the left atrium.
Another view of the infused CT scan of the left lower lobe arteriovenous malformation (AVM).
Pulmonary angiographic findings are required not only to confirm the diagnosis but also to plan therapeutic embolization.
Small arteriovenous malformations (AVMs) in the right and left lower lobes.
Lateral radiograph shows a left lower lobe arteriovenous malformation (AVM).
Contrast-enhanced CT scan showing a left lower lobe arteriovenous malformation (AVM).
Right lower lobe arteriovenous malformation (AVM).
CT scan obtained after coil embolotherapy.
Left lower lobe embolotherapy performed at the same sitting as the coil embolotherapy depicted in the previous image.
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