No flow in the left internal carotid artery from just distal to the carotid bulb.
Acute left middle cerebral and posterior cerebral artery territory infarcts.
Although the posterior cerebral artery is not part of the anterior cerebral circulation, a common variant is a fetal origin of posterior cerebral artery is common, in which the posterior communicating artery supplies the majority of blood, Hence its supply is derived from the internal carotid artery.