g) Vascular
i) Orbit
(1) Venous varix
(2) Hemangiomas
(3) Lymphangioma
(4) Superior ophthalmic vein thrombosis
(5) Carotid-cavernous fistula
ii) Sinonasal cavity/facial bones
iii) Skull base/temporal bone
(1) Dissection
(2) Aneurysm
(3) Pseudoaneurysm
(4) Aberrant internal carotid artery
(5) Persistent stapedial artery
see Case in Point August 2, 2006
(6) Jugular dehiscence
(7) Jugular diverticulum
(8) High-riding jugular bulb
iv) Oral cavity, pharynx, supra- and infrahyoid neck
(1) Medial course of internal carotid artery
(2) Dissection
(3) Thrombosis
(4) Occlusion
(5) Pseudoaneurysm
(6) Fibromuscular dysplasia
(7) Aneurysm