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Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
Published on: September 25, 2009
Sylvian fissure arteriovenous malformations
Abstract:
We have operated on 16 cases of arteriovenous malformation (AVM) in and around the sylvian fissure. We call these lesions "sylvian fissure AVMs" and classify them into four subdivisions, namely, pure, lateral, medial, and deep AVMs. By others, they have been variously called AVMs of the basal ganglia, insula, anterior choroidal artery, frontal lobe, or temporal lobe. These sylvian fissure AVMs showed similar angiographic findings: the feeders in all cases were branches of the middle cerebral artery; in some cases, additional feeders from the anterior and posterior choroidal and posterior communicating arteries were present also. We describe the characteristic features of these AVMs from the anatomical and surgical points of view. The surgical results were satisfactory in 15 cases (no additional neurological deficits), and 1 patient died.
Insights
This study details 16 sylvian fissure arteriovenous malformations (AVMs), classifying them into four types. Surgical outcomes for these AVMs were highly successful, with 15 of 16 patients experiencing positive results.
Area of Science:
- Neurosurgery
- Vascular Neurology
- Neuroradiology
Background:
- Arteriovenous malformations (AVMs) in the sylvian fissure present unique surgical challenges.
- Accurate classification and understanding of feeding arteries are crucial for effective treatment.
Observation:
- Sixteen cases of sylvian fissure AVMs were analyzed.
- Lesions were categorized into four subdivisions: pure, lateral, medial, and deep AVMs.
- Angiographic analysis revealed consistent feeding arteries primarily from the middle cerebral artery, with occasional contributions from other cerebral arteries.
Findings:
- Sylvian fissure AVMs exhibit characteristic anatomical and angiographic features.
- Surgical intervention yielded satisfactory results in 15 out of 16 patients.
- The classification system aids in understanding the anatomical variations of these AVMs.
Implications:
- This classification and surgical approach offer a framework for managing sylvian fissure AVMs.
- Understanding feeder patterns improves surgical planning and outcomes for AVM resection.
- Successful surgical management of sylvian fissure AVMs can lead to good patient recovery with minimal neurological deficits.
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