Traumatic pseudoaneurysm of the pulmonary artery: case report and review of the literature.

Pulmonary artery pseudoaneurysm is a very rare but potential complication of chest trauma. These aneurysms are usually produced by penetrating trauma although a few cases have been reported after blunt injury. They should be suspected if there is a persistence of opacity on chest radiograph that when evaluated by contrast-enhanced CT shows an increased opacification of the mass. Diagnosis is confirmed with a pulmonary arteriogram.