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Neurol Med Chir (Tokyo). 2010;50(11):977-83.

Efficacy of revascularization surgery for moyamoya syndrome associated with Graves' disease.

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  • 1Department of Neurosurgery, Kohnan Hospital, Sendai, Miyagi, Japan.


Appropriate management of moyamoya syndrome associated with Graves' disease is undetermined because of the rarity of this combination. Patients tend to present with cerebrovascular events such as transient ischemic attack (TIA) in a thyrotoxic state, which is relieved by proper antithyroid therapy. Four patients with moyamoya syndrome associated with Graves' disease were successfully treated with revascularization surgery on 5 hemispheres among 58 consecutive patients (2-62 years old, mean 34.4 years) with moyamoya disease in 80 hemispheres treated from March 2004 to May 2007. Three patients presented with TIA, and one patient presented with intracerebral hemorrhage. Three patients were thyrotoxic at the onset of the cerebrovascular events. All patients underwent revascularization surgery after normalization of thyroid function. Euthyroid state was strictly maintained perioperatively. One patient developed symptomatic cerebral hyperperfusion, which was resolved by blood pressure control. Postoperative courses of the other patients were uneventful, and all 4 patients have remained neurologically stable after discharge. Cerebrovascular reconstruction surgery is a successful treatment option for moyamoya syndrome associated with Graves' disease. Timing of surgery during the euthyroid state and perioperative management considering the thyroid function and the cerebral hemodynamic change are the keys to successful surgical treatment.

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