Pulmonary Artery Pseudoaneurysms: Clinical Features and CT Findings

Abstract

PAPs showed a strong predilection for the peripheral pulmonary arteries. Multiplicity of PAPs can be seen in the settings of endocarditis and pulmonary metastatic disease. Most PAPs were not associated with a ground-glass halo. PAPs can be lethal but were often not suspected clinically and were underreported by radiologists.

Embolisation of large pulmonary artery pseudoaneurysm with conservative treatment of delayed coil extrusion

“…Swift and accurate diagnosis is crucial because the mortality rate associated with a ruptured PAP can be as high as 50%. (1) The prevalence of PAPs ranges from 5% to 11% in those presenting with haemoptysis and who underwent either bronchial or pulmonary angiography, or both. (2) To our knowledge, only five previous reports have been published on spontaneous PAPs arising within primary lung neoplasms, with four of these five cases involving squamous cell carcinomas.…”

Traumatic pulmonary artery injury: a review of the recent literature

“…The pseudoaneurysm may stabilize and spontaneously resolve or expand and rupture, depending on the etiology, size and intravascular pressure [1] . A pseudoaneurysm can be asymptomatic or characterized by symptoms of hemoptysis, shortness of breath and chest pain [6,7] . An iatrogenic pseudoaneurysm of the PA is most common, followed by trauma-induced events.…”

“…An iatrogenic pseudoaneurysm of the PA is most common, followed by trauma-induced events. A pseudoaneurysm of the PA can also be congenital or have a non-traumatic cause, which includes infections and neoplasms [6,7] . An arterial fistula is an abnormal connection between the artery and other lumen organs.…”

Palliative Embolization for Refractory Bleeding

“…The pulmonary artery pseudoaneurysms associated with cancer typically occur at the site of invasion. 27 The most common presenting symptom is massive hemoptysis. Hemoptysis secondary to PAPs accounts for less than 10% of cases, with the majority of hemoptysis cases arising from a bronchial artery origin.…”

“…The typical CT findings are a nodular opacity or mass encasing the pulmonary artery. 27 Coil embolization has shown satisfactory results in the management of acute pulmonary hemorrhage secondary to PAPs. Embolization of the feeding pulmonary artery and bronchopulmonary shunt portions can be undertaken.…”