Characteristics of 13 patients with 24 additional aneurysms detected on 5-year MRA follow-up

CharacteristicsData
Women12 (92%)
AgeMean, 52 years; range, 40–70 years
Ruptured aneurysms11 (85%)
Aneurysm sizeMean, 3.1 mm; range, 1–6 mm
>1 Additional aneurysm5 (38%)
Aneurysm location
    Anterior cerebral artery4
    Middle cerebral artery10
    Posterior circulation3
    Internal carotid artery7
De novo aneurysms1
    Unchanged18
    Grown1
    Incomparable4