8/6/2023 0 Comments Pica artery anatomyInfarction of this artery due to thrombosis or stroke leads to PICA syndrome, a neurological disease with characteristic, stereotyped symptoms. According to the National Institute of Neurological Disorders and Stroke, Wallenberg Syndrome (aka Lateral Medullary Syndrome or Posterior Inferior Cerebellar Artery Syndrome) is a neurological condition caused by a blockage of the vertebral artery (VA) or posterior inferior cerebellar artery (PICA), ultimately leading to infarction of the later. The medial branch is continued backward to the notch between the two hemispheres of the cerebellum while the lateral supplies the under surface of the cerebellum, as far as its lateral border, where it anastomoses with the anterior inferior cerebellar and the superior cerebellar branches of the basilar artery.īranches from this artery supply the choroid plexus of the fourth ventricle. The SCA and AICA are branches of the basilar artery, which wraps around the anterior aspect of the pons before reaching the cerebellum. It winds backward around the upper part of the medulla oblongata, passing between the origins of the vagus and accessory nerves, over the inferior peduncle to the under surface of the cerebellum, where it divides into two branches. C 5h 5h ( a ) 4 AA 4 - PICA 5v B FIGURE KEY 1 vertebral artery 2 posterior inferior cerebellar artery ( PICA ) 2v vermian. At the bottom, the Posterior Inferior Cerebellar Artery (PICA) is the latest addition to cerebellar supply, Unlike AICA and SCA, it seems to arise from the. The medial branch courses downward toward the biventral lobule and anastomoses with the branches of the posterior inferior cerebellar artery. The posterior inferior cerebellar artery (PICA), the largest branch of the vertebral, is one of the three main arterial blood supplies for the cerebellum.
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