Pulmonary Imaging Findings of Vasculitis

Purpose of Review The purpose of this article is to review the various pulmonary imaging findings that may be present in patients with various types of vasculitis. The review will also go over the potential clinical significance of the various findings. Recent Findings The majority of pulmonary findings related to vasculitis revolve around granulomatosis with polyangiitis (GPA) and eosinophilic granulomatosis with polyangiitis (EGPA). Additional etiologies are rare and mostly present as diffuse alveolar hemorrhage when small vessels are involved and aneurysms when medium and large vessels are involved. Pulmonary imaging findings related to vasculitis vary widely across etiologies. While many of these manifestations are rare, it is important to be familiar with them as they can cause severe complications.