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Posterior fossa arteriovenous malformations.

C G Drake, A H Friedman, S J Peerless

    Journal of Neurosurgery
    |January 1, 1986
    PubMed
    Summary
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    This study details the treatment of 66 infratentorial arteriovenous malformations (AVMs), with 71% of patients achieving good outcomes. Key findings highlight surgical outcomes and associated risks in AVM treatment.

    Area of Science:

    • Neurosurgery
    • Vascular Neurology

    Background:

    • Infratentorial arteriovenous malformations (AVMs) are rare but serious vascular lesions.
    • Hemorrhage is the most common presentation of these AVMs, posing significant risks.

    Purpose of the Study:

    • To report the treatment outcomes of a series of 66 patients with infratentorial AVMs.
    • To analyze the surgical approaches, complications, and results in managing these complex lesions.

    Main Methods:

    • Retrospective review of 66 patients treated for infratentorial AVMs.
    • Surgical interventions included complete excision, ligation of feeding arteries, embolization, and hematoma removal.
    • Patient outcomes were assessed based on functional status and survival rates.

    Main Results:

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    • Complete excision of AVMs was achieved in 47 out of 51 attempted cases.
    • A good outcome was observed in 71% of patients, with 14% experiencing poor results and 15% mortality.
    • Postoperative hemorrhage due to inadequate hemostasis was a significant cause of morbidity.

    Conclusions:

    • Surgical treatment of infratentorial AVMs can yield favorable outcomes, but carries substantial risks.
    • Meticulous hemostasis is crucial to minimize postoperative hemorrhage and improve patient results.
    • The presence of associated aneurysms may influence treatment complexity and outcomes.