摘要

<正>Key facts Definition:Delamination of wall of carotid artery from entry of blood(under arterial pressure)through a rent in intima.Consider in young/middle-aged patient with headache,TIA,stroke(dissection causes 10%25%of ischemic strokes in young adults).Common carotid artery(CCA)dissection:Usually an extension from arch dissection.Internal cartied artery(ICA)dissection:Localized,most frequent site of head/neck dissection.