A case of Brucella aortitis associated with development of thoracic aortic aneurysm and aortobronchial fistula.

Objectives: The purpose of this case report is to document the occurrence of granulomatous aortitis complicated by formation of a saccular aneurysm and aortobronchial fistula due to Brucella infection.

Methods: A 65-year-old man with a history of feral swine hunting presented with hemoptysis and was found to have a saccular thoracic aortic aneurysm and associated aortobronchial fistula. The aneurysm underwent operative repair with closure of the aortobronchial fistula.

Results: Histopathological examination of the aneurysm wall revealed evidence of granulomatous aortitis. Cultures of the blood and aortic wall tissue were positive for Brucella suis.

Conclusions: Although rare, Brucella infection should be considered in the differential diagnosis of aortic aneurysm with granulomatous aortitis.