Clinical Presentation

A 47-year-old man who has head and neck cancer previously treated with radiation to the neck presents to the emergency department with bleeding into the mouth.

Further Work-up

(A) Contrast-enhanced computed tomographic (CT) scan of the neck 3 days before carotid rupture shows an irregularly marginated left carotid artery (arrow) passing through necrotic neck tumor (arrowhead). (B) Conventional angiogram in the frontal projection shows pseudoaneurysm (arrow