RT Journal Article SR Electronic T1 Homonymous left hemianopia secondary to traumatic extracranial vertebral artery dissection JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 623 OP 624 DO 10.7861/clinmedicine.11-6-623 VO 11 IS 6 A1 Hala Kanona A1 Vanessa Tuboku-Metzger A1 Khaldoon Wahab YR 2011 UL http://www.rcpjournals.org/content/11/6/623.abstract AB This lesson reports the case of a 32-year-old female presenting with left-sided homonymous hemianopia after a road traffic accident. A diagnosis of vertebral artery dissection (VAD) was missed at presentation after an initial computed tomography head scan was normal. Later, VAD was confirmed on neck magnetic resonance imaging. VAD is an uncommon cause of stroke in the young and, to date, there are no current emergency guidelines available for the management of patients with the condition.