Preoperative Embolization of Hypervascular Head and Neck Tumors to Improve Surgical Outcomes

OUTLINE: Patients receive iodixanol via injection and undergo diagnostic cerebral angiogram over 30 minutes. If the tumor blood supply is suitable, patients undergo tumor vessel embolization with polyvinyl alcohol (PVA) suspended in ethiodized oil (EOV) and delivered via a catheter. Patients also undergo head and neck computed tomography (CT) scans immediately after completion of tumor vessel embolization, and again between 2-3 months later. After completion of study, patients are followed for up to 6 months.