Table 2

Aneurysm characteristics and location

In situ thrombosisControlP values
Size (average) (mm) 8.41±6.196.85±5.550.0952
Anterior circulation 34 (91.9%)652 (92.5%)0.9184
 Internal carotid 27 (72.9%)522 (74.0%)0.8851
  Cervical 016
  Petrous 06
  Cavernous 766
  Clinoidal 022
  Ophthalmic 3125
  Paraophthalmic 8177
  Posterior 
  communicating/
  Anterior choroidal
 794
  Superior hypophyseal 17
  Termination 19
 Beyond ICA 7 (18.9%)129 (18.3%)0.3173
  Anterior 
  communicating
 150
  A1-2 232
  A2-3 111
  M1 010
  M2 14
  Bifurcation 222
Posterior circulation 3 (8.1%)54 (7.7%)0.9204
 Basilar 212
 Superior cerebellar 
 artery
 11
 Posterior cerebral 
 artery
 06
 Vertebral 026
 Posterior inferior 
 cerebellar artery
 09
  • ICA, internal carotid artery.