Figure 1.

(A) Two weeks before interventional therapy, the patient's skull base, left carotid sheath, and foramen lacerum area showed patchy abnormal signals, which are considered to be fibrotic changes after radiotherapy. (B) No obvious enhancement was noted in the abnormal signal areas on the skull base, the left carotid sheath area, and the foramen lacerum area. (C) Coronal section. (D) Enhanced scan (coronal section). (E) Left internal carotid artery pseudoaneurysm (frontal view). (F) Left internal carotid artery pseudoaneurysm (lateral view). (G) Stent graft implantation (frontal view). (H) Stent graft implantation (lateral view).