Infarctus latéro-bulbaire sur dissection intracrânienne suivi d'une hémorragie sous-arachnoïdienne

This case underlines the hemorrhagic risk of an intradural vertebral artery dissection and its possible progression to aneurysm. Subsequent angiographic imaging must be carefully examined to search for aneurysms which may require early specific treatment because of the high risk of recurrent bleeding.