Artery of Percheron territory infarct

Artery of Percheron territory infarct is rare, on account of the relative rarity of the artery of Percheron, and presents with a variety of signs and symptoms collectively termed the paramedian thalamic syndrome. It is a type of posterior circulation infarction.

On imaging, it is classically characterised by bilateral infarcts areas involving the rostral midbrain and/or ventromedial thalamus.

The symptoms may vary following infarct extension through thalamic or mesencephalic structures 2:

  • bilateral paramedian thalamic involvement is usually characterised by a triad of altered mental status, vertical gaze palsy, and memory impairment
  • when also accompanied by rostral midbrain lesions, a mesencephalothalamic or thalamopeduncular syndrome occurs, which includes other oculomotor disturbances, hemiplegia, cerebellar ataxia, and movement disorders, along with the triad mentioned above

The infarct is restricted to the rostral midbrain and/or the ventromedial thalamus.

Described by the French neurologist Gérard Percheron in 1973.

Possible differential considerations include


Stroke and intracranial haemorrhage
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Article Information

rID: 13109
Sections: Gamuts, Pathology
Tag: infarct
Synonyms or Alternate Spellings:
  • Percheron infarct
  • Percheron artery infarct
  • Percheron infarction
  • Percheron artery infarction
  • Artery of Percheron infarction
  • Artery of Percheron infarct

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