Moyamoya Disease Emerged with Corpus Callosum Hemorrhage: A 3D Computer Graphic Analysis

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  • Yamamoto Shusuke
    Department of Neurosurgery, Graduate School of Medicine and Pharmaceutical Science, University of Toyama
  • Akioka Naoki
    Department of Neurosurgery, Graduate School of Medicine and Pharmaceutical Science, University of Toyama
  • Kashiwazaki Daina
    Department of Neurosurgery, Graduate School of Medicine and Pharmaceutical Science, University of Toyama
  • Tomita Takahiro
    Department of Neurosurgery, Graduate School of Medicine and Pharmaceutical Science, University of Toyama
  • Kuwayama Naoya
    Department of Neurosurgery, Graduate School of Medicine and Pharmaceutical Science, University of Toyama
  • Kuroda Satoshi
    Department of Neurosurgery, Graduate School of Medicine and Pharmaceutical Science, University of Toyama

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The authors present a rare case of moyamoya disease emerged with corpus callosum hemorrhage. A 31-year-old woman suddenly complained of severe headache followed by consciousness disturbance. Radiological examinations revealed the bleeding in the splenium of corpus callosum, which was associated with intraventricular hemorrhage. On cerebral angiography, the carotid fork was severely stenotic on both sides, and a marked dilatation was observed in the anterior/posterior choroidal arteries and posterior pericallosal artery as well as the lenticulostriate arteries. Therefore, she was diagnosed as moyamoya disease. She successfully underwent superficial temporal artery to middle cerebral artery (STA–MCA) anastomosis and indirect bypass on both sides. Postoperative course was uneventful. Follow-up cerebral angiography performed 4 months after surgery showed well-developed surgical collaterals via the external carotid system and a marked decrease of the dilated moyamoya vessels. She has been free from any cerebrovascular events for 36 months after surgery. Radiological findings strongly suggest that splenial bleeding occurred due to the rupture of the dilated abnormal collateral vessels that originate from the medial posterior choroidal artery and penetrate the corpus callosum in this case. Three-dimensional computer graphic analysis was useful to determine the complex collateral circulation in moyamoya disease.

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