Chiari Malformation Type I with Concomitant Persistent Trigeminal Artery

Persistent trigeminal artery (PTA) is the most frequent type of persistent primitive carotid-basilar artery anastomoses. Persistent trigeminal artery is usually associated with small or absent posterior communicating artery (Pcom). It may also be associated with hypoplastic vertebral and basilar arteries. Patients may present with symptoms related to hypo-perfusion of posterior circulation or microembolization from carotid artery to posterior circulation. We are presenting a 60-year-old who had recurrent episodes of vertigo and parasthesia, in whom MR angiography revealed a medial, Saltzman type 1 PTA on the left with absent ipsilateral Pcom, duplicated ipsilateral superior cerebellar artery, hypoplastic A1 segment of contralateral anterior cerebral artery (ACA), azygous ACA and hypoplastic ipsilateral vertebral artery.

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Incidental Findings of Persistent Primitive Trigeminal Artery on 3-Dimensional Time-of-Flight Magnetic Resonance Angiography at 3.0 T: An Analysis of 25 Cases

Chen

Li²,

Chen³

et al. 2011

Journal of Neuroimaging

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Chiari Malformation Type I with Concomitant Persistent Trigeminal Artery

Abstract: This is the first report in the literature about the coincidence of both unusual anomalies. The latest literature of both rare anatomy and the unusual clinical course will be discussed.

Cited by 5 publications

References 34 publications

Lower brainstem dysfunction in an infant with persistent primitive trigeminal artery

Lower brainstem dysfunction in an infant with persistent primitive trigeminal artery

Persistent trigeminal artery and associated vascular variations

Incidental Findings of Persistent Primitive Trigeminal Artery on 3-Dimensional Time-of-Flight Magnetic Resonance Angiography at 3.0 T: An Analysis of 25 Cases

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