Transarterial embolization (TAE) is less invasive than surgery for the treatment of pseudoaneurysms. Costocervical trunk (CCT) pseudoaneurysms are extremely rare. We herein report an unusual case of a 45-year-old man with a CCT pseudoaneurysm caused by a bullectomy with pleural abrasion, which had been performed to manage a spontaneous pneumothorax. The patient presented with chronic chest pain and successfully underwent TAE with a metallic coil. The chest pain completely disappeared 2 weeks after the TAE, and follow-up computed tomography showed that the pseudoaneurysm had almost completely disappeared 9 months after the TAE.
Keywords: chest pain; costocervical trunk; embolization; pseudoaneurysm.