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Monoballism associated with internal carotid artery occlusion:a case report Masaaki UNO 1 , Shin UEDA 1 , Shinji MANABE 1 , Keizo MATSUMOTO 1 1Department of Neurological Surgery, School of Medicine, The University of Tokushima Keyword: ballism , monoballism , subthalamic nucleus , internal carotid artery occlusion , STA-MCA anastomosis pp.169-173
Published Date 1996/2/10
DOI https://doi.org/10.11477/mf.1436901162
  • Abstract
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A 62-year-old man was admitted to our hospital with abrupt onset of monoballism in the left arm. Brain MRI showed a hemorrhagic lesion in the right subthalamic nucleus. MRA demonstrated occlusion of the right in-ternal carotid artery occlusion. Cerebral angiogram in-dicated a leptomeningeal anastomosis to the right mid-dle cerebral artery from the right posterior cerebral artery. SPECT with 99mTc-HMPAO demonstrated the reduction of cerebral blood flow in the right fronto-temporal region. Right superficial temporal artery-middle cerebral artery anastomosis was performed 7 months after onset. Monoballism disappeared after surgery and the patient had a good clinal course dur-ing the postoperative period.

Monoballism associated with internal carotid artery occlusion is rare, and we were able to show the subtha-lamic nucleus lesion with MRI soon after onset. We considered that the reason for this hemorrhage in the subthalamic nucleus was the hemodynamic stress to the posterior cerebral artery area caused by the ipsilateral occlusion of the internal carotid artery.


Copyright © 1996, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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