Article Text

Download PDFPDF
Unusual presentation of more common disease/injury
Occlusion of the artery of Percheron: an unusual cause of bilateral stroke
  1. Clare Anderson1,
  2. Richard O'Brien2
  1. 1Radiology Department, City Hospitals Sunderland NHS Foundation Trust, Sunderland, UK
  2. 2Care of the Elderly Department, City Hospitals Sunderland NHS Foundation Trust, Sunderland, UK
  1. Correspondence to Dr Richard O'Brien, richardobrien{at}nhs.net

Summary

The artery of Percheron is a rare anatomical variant whereby a single vessel arising from the proximal segment of one posterior cerebral artery supplies both medial thalami. This is a rare example of a single arterial supply to brain structures on both sides of the midline. Occlusion of the artery of Percheron results in bilateral medial thalamic infarction, which is manifest clinically as gaze paresis, cognitive disturbance and altered consciousness. The presentation can mimic subarachnoid haemorrhage, drug intoxication, encephalitis and other inflammatory or infective conditions. The presentation is similar to the ‘top of the basilar syndrome’ and early recognition should prompt further investigation for underlying stroke aetiologies and consideration can be given to thrombolysis if vascular occlusion can be confirmed.

Statistics from Altmetric.com

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.