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Updated: May 19, 2026

A Murine Model of Carotid Aneurysm Formation
Published on: September 9, 2025
Risk factors for multiple intracranial aneurysms rupture: a retrospective study
Hai-Tao Lu1, Hua-Qiao Tan, Bin-Xian Gu
1Institute of Interventional and Diagnostic Radiology, The Sixth Affiliated People's Hospital, Shanghai Jiao Tong University, No. 600, Yi Shan Road, Shanghai 200233, China.
Risk factors for ruptured multiple intracranial aneurysms were investigated. Middle-aged patients and anterior communicating artery aneurysms showed higher rupture risk, with smaller aneurysms also being prone to rupture.
Area of Science:
- Neurology
- Neurosurgery
- Radiology
Background:
- Predicting intracranial aneurysm rupture risk is controversial.
- Investigating risk factors for multiple intracranial aneurysms is crucial.
Purpose of the Study:
- To retrospectively analyze risk factors associated with the rupture of multiple intracranial aneurysms.
- To identify patterns in age, size, and location of ruptured multiple intracranial aneurysms.
Main Methods:
- Retrospective review of 134 patients with 294 aneurysms (July 2007-July 2011).
- Analysis using univariate and multivariate logistic regression models.
- Factors analyzed included age, gender, aneurysm site, and size.
Main Results:
- Aneurysm rupture incidence was significantly higher in patients aged 45-65 years.
- Anterior communicating artery (AComA) aneurysms had a significantly higher rupture rate (37.1%) compared to other sites.
- Most aneurysms (88.1%) were 5mm or less, with 68% of ruptured aneurysms also being 5mm or less.
Conclusions:
- Age, size, and location are key factors in managing unruptured intracranial aneurysms.
- AComA aneurysms in patients with multiple aneurysms are particularly prone to hemorrhage.
- Understanding these patterns aids in clinical decision-making for treatment.
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