====== Posterior communicating artery aneurysm classification ======

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(Anteroinferior)-Projecting (Unruptured) (Saccular) (Wide necked) (Giant) [[posterior communicating artery aneurysm]].

see [[Intracranial aneurysm classification]].
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1. May occur at either end of  [[Posterior communicating artery]] that is at the junction with the [[PCA]], or more commonly at the
junction with [[internal carotid artery]] (typically points laterally, posteriorly, and inferiorly). May impinge on the [[third cranial nerve]] in either case and cause [[oculomotor nerve palsy]] ([[ptosis]], [[mydriasis]], “down and out” deviation) that, is not pupil sparing in 99% of cases.

2. Posterior communicating artery aneurysms associated with a [[fetal posterior communicating  artery]].[[Fetal-type posterior communicating aneurysm]]

3. [[True posterior communicating artery aneurysm]].

4. [[Ruptured posterior communicating artery aneurysm]].

===== Wide-Necked Posterior Communicating Artery Aneurysm =====


[[Wide-Necked Posterior Communicating Artery Aneurysm]]