Table 2:

Location of cerebral aneurysms

LocationNo.%
Anterior circulation97788
    Anterior communicating artery/anterior artery40937
    Pericallosal artery302.7
    Posterior communicating artery19117
    Carotid/ophthalmic artery18316.5
    Middle cerebral artery14312.8
    Internal carotid artery212
Posterior circulation*13111
    Vertebrobasilar artery655.7
    Posterior inferior cerebellar artery403.6
    Anterior inferior cerebellar artery80.2
    Posterior cerebral artery181.5
  • * breakdown of aneurysms treated.