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Incidental major artery aneurysms in patients with non-hemorrhagic moyamoya disease

Je Young Yeon1, Jong-Soo Kim, Seung-Chyul Hong

  • 1Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 IL-Won Dong, Kang-Nam Ku, Seoul, Republic of Korea, 135-710.

Acta Neurochirurgica
|February 1, 2011
PubMed
Abstract

Insights

Major artery aneurysms occur in 3.6% of patients with moyamoya disease (MMD), increasing with age. These aneurysms are often in the posterior circulation, especially in older patients with bilateral MMD.

Area of Science:

  • Neurology
  • Vascular Surgery
  • Radiology

Background:

  • Major artery aneurysms are occasionally discovered incidentally during moyamoya disease (MMD) evaluation.
  • The prevalence and characteristics of these aneurysms in MMD patients are not well-defined.

Purpose of the Study:

  • To determine the prevalence and characteristics of incidental major artery aneurysms in adult patients with non-hemorrhagic moyamoya disease.
  • To briefly discuss the management and outcomes of these aneurysms.

Main Methods:

  • Retrospective review of 249 adult patients diagnosed with non-hemorrhagic moyamoya disease.
  • Cerebral angiograms were analyzed to identify incidental aneurysms on major intracranial arteries or their tributaries.

Main Results:

  • 13 major artery aneurysms were identified in 9 patients (3.6%).
  • Aneurysms were more common in older patients and those with bilateral MMD, with 54% located in the posterior circulation.
  • Complications included ischemic events after surgical clipping and endovascular coiling.

Conclusions:

  • Incidental major artery aneurysms are present in 3.6% of non-hemorrhagic MMD patients, with prevalence increasing with age.
  • Posterior circulation aneurysms are common, particularly in older patients with bilateral MMD.
  • Further research on the natural history of these aneurysms is needed to guide management strategies.

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