Pathology Glomus jugulare tumors are typically located just under the skull base. at the bulb of the internal jugular vein. The tumors may spread superiorly into the jugular foramen, causing CN X, CN X and cn xi deficits The primary blood supply to jugulare tumors is via the ascending pharyngeal artery. In addition he occipital and posterior auricular arteries can contribute to vascularization Intraoperatively ligation of external carotid artery can significantly reduce the hemorrhagePathology ◼ Glomus jugulare tumors are typically located just under the skull base, at the bulb of the internal jugular vein. The tumors may spread superiorly into the jugular foramen, causing CN IX, CN X, and CN XI deficits. ◼ The primary blood supply to jugulare tumors is via the ascending pharyngeal artery. In addition, the occipital and posterior auricular arteries can contribute to vascularization. ◼ Intraoperatively ligation of external carotid artery can significantly reduce the hemorrhage