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Updated: May 28, 2026
03:47
A Murine Model of Carotid Aneurysm Formation
Published on: September 9, 2025
Chapter 1: The Natural History of Intracranial Aneurysms
Paolo Palmisciano1, Mario Zuccarello2,3
1Department of Neurosurgery, University of California, Davis, Sacramento, CA 95817, USA.
Brain Sciences
|May 27, 2026
Summary
Intracranial aneurysms can grow and rupture, causing serious health issues. Understanding their dynamic behavior and individual risk factors is key to effective brain aneurysm management.
Area of Science:
- Neurology
- Vascular Biology
- Medical Imaging
Background:
- Intracranial aneurysms are common vascular lesions with unpredictable behavior.
- A subset of aneurysms grows and ruptures, leading to subarachnoid hemorrhage, significant morbidity, and mortality.
- Aneurysm behavior is influenced by hemodynamics, inflammation, genetics, and environmental factors.
Purpose of the Study:
- To review the epidemiology, pathobiology, growth patterns, and rupture risk of intracranial aneurysms.
- To integrate foundational knowledge with recent advancements in genetics, vessel wall imaging, and predictive modeling.
- To emphasize the importance of understanding natural history for clinical decision-making.
Main Methods:
- Review of observational studies on intracranial aneurysms.
- Integration of recent research in genetics and vessel wall imaging.
- Discussion of predictive modeling for individualized risk stratification.
Main Results:
- Aneurysm behavior is dynamic, not static, influenced by multiple interacting factors.
- Rupture risk is variable over time, potentially highest early after formation.
- Individualized risk stratification is evolving beyond traditional population-based estimates.
Conclusions:
- Understanding the natural history of brain aneurysms is crucial for managing rupture risk.
- Balancing observation risks with intervention is essential for patient care.
- Future innovations in aneurysm management will be guided by a deeper understanding of aneurysm biology and behavior.
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