Anomalous Origin of Left Vertebral Artery from Carotid Bulb Seen as "Trifurcation" of Left Common Carotid Artery with Acute Infarct in Ipsilateral Thalamus: A Case Report.

Anomalous origin of vertebral arteries is not common and usually seen as an incidental finding on imaging. We report a case of anomalous origin of left vertebral artery from left carotid bulb ("trifurcation" of left common carotid artery) on magnetic resonance angiography in a 64-year old male who also had ipsilateral thalamic acute infarct.