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Cerebral microaneurysms found incidentally during aneurysm surgery
J Inamasu1, S Suga, T Horiguchi
1Department of Neurosurgery, Keio University School of Medicine, Tokyo, Japan. georges@med.keio.ac.jp
Neurological Research
|June 29, 2001
Summary
Incidental cerebral microaneurysms are found in nearly 5% of patients undergoing surgery for known cerebral aneurysms. Awareness is crucial for neurosurgeons and neuroradiologists to consider treating these small, often contiguous, lesions.
Area of Science:
- Neurosurgery
- Neuroradiology
- Vascular Neurology
Background:
- Cerebral microaneurysms are often discovered incidentally during surgical procedures for other diagnosed cerebral aneurysms.
- The frequency and characteristics of these incidental findings require further investigation.
Purpose of the Study:
- To retrospectively summarize the frequency and angiographic features of incidental cerebral microaneurysms.
- To inform neurosurgeons and interventional neuroradiologists about these incidental findings.
Main Methods:
- Retrospective review of patients undergoing surgery for cerebral aneurysms.
- Identification and analysis of incidentally discovered microaneurysms.
Main Results:
- Seventeen patients (4.9%) had incidental microaneurysms.
- The middle cerebral artery (MCA) was the most common location (41%).
- MCA microaneurysms were often adjacent to larger, known aneurysms.
Conclusions:
- Neurosurgeons and interventional neuroradiologists must be vigilant for incidental microaneurysms during aneurysm surgery.
- Surgical treatment may be justified due to minimal additional risk and potential benefit of preventing rupture or growth.