An unusual case of the right subclavian artery aneurysm resulting from long-term repetitive blunt chest trauma

This case report describes a right subclavian artery aneurysm secondary to long-term repetitive blunt trauma. A 62-year-old man with a right subclavian artery aneurysm had had a history of bird hunting using a shotgun that impacted substantially against his right clavicula and shoulder weekly for >20 years. The patient underwent open repair with partial sternotomy and distal balloon control. The aneurysmal sac was resected, and the right subclavian artery was reconstructed with a primary end-to-end anastomosis. Histopathologic examination of the resected aneurysmal wall revealed that all three layers of the arterial wall were comparatively intact, with fibrosis and lipid deposition in the intima and in various degrees of degeneration in the media, suggesting a true aneurysm.