posterior inferior cerebellar artery

(redirected from Posterior inferior cerebellar)

pos·te·ri·or in·fe·ri·or cer·e·bel·lar ar·ter·y

[TA]
origin, intracranial part of vertebral artery; distribution, lateral medulla, choroid plexus of fourth ventricle, and cerebellum; anastomoses, superior cerebellar and anterior inferior cerebellar artery; gives rise to posterior spinal artery [TA], cerebellar tonsillar branch [TA], and choroidal branch to fourth ventricle [TA].

pos·te·ri·or in·fe·ri·or cer·e·bel·lar ar·te·ry

(pos-tēr'ē-ŏr in-fēr'ē-ŏr ser'ĕ-bĕl'lar ahr'tĕr-ē) [TA]
Origin, intracranial part of vertebral artery;distribution, lateral medulla, choroid plexus of fourth ventricle, and cerebellum; anastomoses, superior cerebellar and anterior inferior cerebellar artery; gives rise to posterior spinal artery [TA], cerebellar tonsillar branch [TA], and choroidal branch to fourth ventricle [TA].
Synonym(s): arteria inferior posterior cerebelli.

posterior inferior cerebellar artery

A branch of the vertebral arteries; it runs dorsally along the edge of the hindbrain and supplies the choroid plexus of the fourth ventricle, the lateral hindbrain, the inferior cerebellar peduncle, and posterior regions of the cerebellum.
See: brain (Major arteries of the brain) for illus.
See also: artery
References in periodicals archive ?
Magnetic resonance imaging (MRI) on day 2 showed an acute left cerebellar infarct involving the posterior inferior cerebellar artery and the anterior inferior cerebellar artery territories with hydrocephalus and pneumoventricle (Figure 1b, 1c, 1d).
These structural abnormalities in CM-1 may include stretching of cranial nerves or direct compression of brain stem nuclei, compression of the posterolateral part of the medulla and the upper cervical spinal cord, vascular distortion in the territories irrigated by the vertebral and posterior inferior cerebellar arteries, and pressure on the rootlets of C1, C2, and the vagus nerves (4,5).
Other sequelae include downstream embolisation of a thrombus, anterior spinal artery compromise causing spinal cord ischaemia, and occlusion of blood flow to the posterior inferior cerebellar artery (PICA), causing lateral medullary syndrome.
of California, San Francisco) details the basic concepts and tenets of aneurysm microsurgery, various craniotomies and exposures for successful clipping, and microsurgical anatomy, dissection strategies, and clipping techniques for each of the seven most common aneurysm types: posterior and anterior communicating artery, middle cerebral artery, ophthalmic artery, basilar bifurcation, pericallosal artery, and posterior inferior cerebellar artery aneurysms.
DSA demonstrated occlusion of the right vertebral artery, occlusion of the left vertebral artery proximal to the posterior inferior cerebellar artery (PICA), reconstitution of the vertebrobasilar confluence distal to the PICA, and occlusion of the remainder of the basilar artery with filling of the basilar tip via the posterior communicating artery.
Posterior inferior cerebellar artery syndrome of Wallenberg after chiropractic manipulation.
The posterior inferior cerebellar arteries arise from the vertebral arteries and supply the lateral medulla and inferior part of the cerebellum.
The posterior spinal arteries occasionally originate from the posterior inferior cerebellar artery.
Cervical and cerebral angiography showed the left vertebral artery thrombosed at 2 cm from its origin (Fig 3) and mild diffuse spasm of the right vertebral artery, with reflux into the left vertebral artery up to the C5 level, covering the posterior inferior cerebellar artery territory.

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