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The superior cerebellar artery (SCA) arises from the distal basilar artery, just below the posterior cerebral artery (PCA) and typically supplies:  whole superior surface of the cerebellar hemispheres down to the great horizontal fissure, superior vermis dentate nucleus, most of the cerebellar white matter parts of the midbrain


Stroke pattern:

  • Full SCA infarcts are usually associated with PCA or brainstem infarcts. Clinical presentation ranges from severe patterns (coma, quadriplegia, oculomotor disturbances) due to simultaneous brainstem infarct or top of the basilar syndrome to more limited and benign presentations (Mills–Guillain Syndrome, tremor, involuntary movements, cerebellovestibular syndrome, dysarthria).
  • Lateral SCA infarcts are the most common, involving the anterior rostral cerebellum with ipsilateral limb ataxia and lateropulsion and dysarthria.
  • Medial SCA infarcts are less common, with ataxia and dysarthria.

The vascular territories in the cerebellum and brainstem: CT and MR study. by Savoiardo M, Bracchi M, Passerini A, Visciani A. AJNR Am J Neuroradiol. 1987 Mar-Apr;8(2):199-209. Oxford Textbook of Stroke and Cerebrovascular Disease - Bo Norrving - Oxford University Press, 2019


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