Isolated insular infarct

Last revised by Yaqub Alharbi on 28 Sep 2022

An isolated insular infarct is a form of insular infarct where the infarct is confined to the insular cortex or region supplied by the long insular artery. Infarcts in insula can additionally by supplied by the MCA branches as well as the lenticulostriate branches.

An isolated insular infarct may manifest with a combination of deficits which can include 3,4

  • somatosensory deficits
  • gustatory/speaking deficits
  • coordination issues/vestibular-like syndrome with
    • vestibular-like syndrome” has been reported in around a third of patients 6
    • dizziness, gait instability, and tendency to fall, but no nystagmus
  • cardiovascular/autonomic disturbances - hypertensive episodes
  • neuropsychological/cognitive disorders

The etiology can vary from being cardioembolic to large artery disease to cryptogenic 6.

Isolated insular infarcts have a generally better overall long term outcome compared to a large territory stroke 6.

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