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Middle cerebral artery fenestration

M L Lazar, J E Bland, R R North

    Neurosurgery
    |March 1, 1980
    PubMed
    Summary
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    Fenestration of the middle cerebral artery (MCA) is a rare vascular anomaly. This case report details the first documented instance of MCA fenestration associated with an internal carotid artery aneurysm.

    Area of Science:

    • Neurology
    • Vascular Surgery
    • Medical Imaging

    Background:

    • Fenestration of cerebral arteries is an uncommon vascular anomaly.
    • The incidence of angiographically detected fenestration is low, with vertebral and basilar artery fenestrations being more frequently reported.
    • Clinical significance often relates to associated intracranial vascular anomalies.

    Observation:

    • Middle cerebral artery (MCA) fenestration was identified during surgery for an internal carotid artery aneurysm.
    • The anomaly was visually confirmed and photographed.
    • This represents a unique intraoperative finding.

    Findings:

    • The reported incidence of MCA fenestration is approximately 0.26% based on angiographic studies.
    • This is the first reported case of MCA fenestration occurring concurrently with an internal carotid artery aneurysm.

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  • The co-occurrence highlights potential associations between different cerebrovascular malformations.

    • Implications:

    • This finding expands the known spectrum of intracranial vascular anomalies.
    • It suggests a possible link between MCA fenestration and aneurysms, warranting further investigation.
    • Understanding these associations is crucial for surgical planning and risk assessment in neurovascular patients.