artery hypoplasia as a risk factor for acute ischemic stroke in the absence of carotid artery occlusion.
And, it can expose ipsilateral tractus opticus, internal carotid artery, posterior communicating
artery, anterior choroidal artery, thalamus arteriae perforantes, posterior cerebral artery, and pituitary stalk.
Caption: Figure 2: (a) Three-dimensional digital subtraction angiography shows left posterior communicating
artery aneurysm (arrow) and left persistent trigeminal artery (PTA) aneurysm (arrowhead).
Acute subdural hematoma from ruptured posterior communicating
3% of those were found to have normal posterior communicating
2 and 3) confirmed the presence of a large 2 x 1 cm aneurysm arising from the posterior communicating
artery and a smaller aneurysm arising from the middle cerebral artery.
8%) followed by posterior communicating
The primary routes of collateral circulation are the Willisian channels (anterior communicating artery, posterior communicating
artery, and the ophthalmic via the external carotid artery).
In this sub-arachnoid space, the 3rd nerves pass either side of the midline basilar artery and between two of its major branches--the superior cerebellar and posterior cerebral arteries then just below and lateral to the posterior communicating
artery, a key component of the arterial Circle of Willis.
2) In utero, the embryonic trigeminal artery supplies the basilar artery before the posterior communicating
and vertebral arteries develop.
She was quickly intubated for airway protection and taken for a head CT scan, which revealed a large subarachnoid and intraventricular hemorrhage, a dilated segment of the right vertebral artery with a possible blister-like aneurysm, and a large posterior communicating
When location was examined as a risk factor, only aneurysms in the anterior communicating artery (ACoA) and posterior communicating
artery (PCoA) were significantly more likely to be found among patients with ruptured aneurysms.