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Pulmonary Artery Aneurysms and Pseudoaneurysms in Adults: Findings at CT and Radiography

¹ Department of Radiology, Vancouver General Hospital and The University of British Columbia, 3350-950 W 10th Ave., Vancouver, BC V5Z 4E3, Canada.
² Department of Radiology, The Ottawa Hospital, University of Ottawa, Ottawa, ON K1Y 4E9, Canada.
³ Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.

OBJECTIVE. The purpose of this pictorial essay is to illustrate the radiologic manifestations of pulmonary artery aneurysms and pseudoaneurysms with emphasis on the findings on contrast-enhanced CT.

CONCLUSION. Pulmonary artery aneurysms and pseudoaneurysms are uncommon. Most are caused by trauma, often iatrogenic, infection, and Behçet's syndrome. Less common causes include pulmonary hypertension, congenital heart disease, neoplasms, and connective tissue disease. Recognition of pulmonary artery aneurysms and pseudoaneurysms is important because of the high morbidity and mortality rates of rupture.

Keywords: aneurysms • CT angiography • CT arteriography • chest • CT • high-resolution CT • pseudoaneurysms

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