Alagille syndrome

A rare syndrome variably characterized by chronic cholestasis due to paucity of intrahepatic bile ducts, peripheral pulmonary artery stenosis, vertebrae segmentation anomalies, characteristic facies, posterior embryotoxon/anterior segment abnormalities, pigmentary retinopathy, and dysplastic kidneys.

Posterior communicating artery infundibulum

A funnel-shaped symmetrical enlargement of the origin of the posterior communicating artery at its junction with the internal carotid artery.

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PMID (PMCID)
15481729	MALE	Adult
	Progression of a posterior communicating artery infundibulum into an aneurysm in a patient with Alagille syndrome. Case report.
	Cowan JA Jr, Barkhoudarian G, Yang LJ, Thompson BG. J Neurosurg. 2004;101(4):694-6.
	Progression of a posterior communicating artery infundibulum into an aneurysm in a patient with Alagille syndrome.