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A 1976 58% > Table 7: Table showing the percentage of absence and string like in Posterior Communicating artery Adult Absent String Like Right Left Right Left Present study 5% 5% - 5% Earlier studies - - - - Jayasri N and Sadasivan G.
The deep dissection strategy happens with the identification of the posterior communicating artery, following this artery to the P1-P2 junction.
Subdural hematoma of the posterior fossa due to posterior communicating artery aneurysm rupture.
KEY WORDS: Posterior communicating artery, Circle of Willis, Aplasia, Hypoplasia.
In our case, we report a rare case of posterior communicating artery aneurysm presenting with writing apraxia.
The primary routes of collateral circulation are the Willisian channels (anterior communicating artery, posterior communicating artery, and the ophthalmic via the external carotid artery).
A follow-up angiogram on day 3 showed complete occlusion of the left carotid cavernous fistula with excellent crossfill at the anterior communicating artery and collateral flow to the left middle cerebral territory via the left posterior communicating artery (Fig 4).
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.
3) had a large posterior communicating artery arising from the fundus of the aneurysm sac.

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