Table 2:

Comparison of demographic and angiographic data between ruptured and unruptured groups (N = 79)

VariableRupturedUnrupturedTotal
Age (mean ± SD), y55 ± 1054 ± 1155 ± 10
Female, N (%)21 (66)31 (66)52 (66)
Aneurysm diameter (mean ± SD), mm7.4 ± 3.17.1 ± 3.47.3 ± 3.3
Location of aneurysm
    Anterior circulation
    Cavernous ICA112
    Paraclinoid ICA*211 (1)13 (1)
    Posterior communicating artery4 (1)37 (1)
    ICA dorsal wall022
    ICA bifurcation011
    Anterior communicating artery7916
    Pericallosal artery033
    MCA bifurcation235
    Posterior circulation
    Basilar artery tip9 (3)1322 (3)
    Superior cerebellar artery112
    Vertebrobasilar junction202
    Posterior inferior cerebellar artery404
Total32 (4)47 (1)79 (5)
  • Note:—Numbers in parentheses denote retreated aneurysms. ICA indicates internal carotid artery; MCA, middle cerebral artery; Paraclinoid ICA aneurysms included all aneurysms arising from the superior hypophyseal artery, ophthalmic artery, carotid cave, and clinoidal ICA segment.