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Aneurysms associated with moyamoya disease.

Y Konishi, C Kadowaki, M Hara

    Neurosurgery
    |April 1, 1985
    PubMed
    Summary

    Moyamoya disease with aneurysms presents unique challenges. Aneurysms within moyamoya vessels often cause severe hemorrhage, while those elsewhere may also lead to bleeding events.

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    Area of Science:

    • Neurology
    • Neurosurgery
    • Vascular Neurology

    Background:

    • Moyamoya disease is a rare cerebrovascular disorder characterized by progressive stenosis of the internal carotid arteries and their branches.
    • Aneurysms are a known complication of moyamoya disease, increasing the risk of hemorrhage.

    Purpose of the Study:

    • To investigate the clinical characteristics and outcomes of patients with moyamoya disease and associated aneurysms.
    • To differentiate between aneurysms located within moyamoya vessels versus those remote from them.

    Main Methods:

    • Retrospective case series analysis of seven patients diagnosed with moyamoya disease and aneurysms.
    • Classification of cases into two groups based on aneurysm location: within moyamoya vessels (Group A) and remote from moyamoya vessels (Group B).

    Main Results:

    • Group A (five cases) consistently presented with intracerebral and intraventricular hemorrhage due to ruptured moyamoya vessel aneurysms.
    • One Group A patient experienced two hemorrhages, with spontaneous aneurysm disappearance after the first.
    • Group B (two cases) showed varied hemorrhage sources, including an anterior communicating artery aneurysm and moyamoya vessel bleeding.

    Conclusions:

    • Aneurysms within moyamoya vessels pose a high risk of severe hemorrhagic complications.
    • The location of the aneurysm relative to the moyamoya vasculature influences the presentation and potential for spontaneous changes.
    • Further research is needed to understand the natural history and optimal management of aneurysms in moyamoya disease.

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