Mediastinal bronchial artery aneurysms are uncommon, with fewer than 40 published case reports (1,2). Presentation is varied, ranging from an incidental imaging finding to hemomediastinum and shock resulting from aneurysm rupture. Rupture can occur with a bronchial artery aneurysm of any size, so prompt treatment is indicated upon diagnosis. Current treatment options include surgical resection, transarterial embolization, and stent-grafting with subsequent percutaneous embolization of feeding vessels. We report a case of an asymptomatic 53-year-old man in whom a mediastinal bronchial artery aneurysm was incidentally discovered on computed tomography (CT) of the chest. The aneurysm and its branches were successfully coil-embolized via a transarterial approach. The case description is as follows.
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