Pulmonary Arteriovenous Malformations Presenting as Difficult-to-Control Asthma

Abbreviations
AVM: Arteriovenous malformation; CT: Computed tomography; DLCO: Diffusing capacity of the lung for carbon monoxide; FEV₁: Forced expiratory volume in one second; FVC: Forced vital capacity; HHT: Hereditary hemorrhagic telangiectasia; PaO₂: Partial pressure of oxygen in arterial blood; PAVM: Pulmonary arteriovenous malformations; SaO₂: Saturation level of oxygen in hemoglobin.

Authors' contributions
MN made substantial contributions to the analysis and interpretation of data, was involved in drafting the manuscript, and gave final approval of the version to be published. VV made substantial contributions to conception and design, revised the manuscript critically for important intellectual content, and gave final approval of the version to be published. FR made substantial contributions to acquisition of data, was involved in drafting the manuscript, and gave final approval of the version to be published. DE made substantial contributions to conception and design and acquisition of data, was involved in drafting the manuscript, and gave final approval of the version to be published. MT made substantial contributions to conception and design, revised the manuscript critically for important intellectual content, and gave final approval of the version to be published. All authors have read and approved the final manuscript.