Hemiplegia Cruciata Found in the Extramedullary Tumor of the Upper Cervical Spinal Cord. A Case Report.:A Case Report

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Paralysis of the ipsilateral arm and contralateral leg was first described by Wallenberg in 1901 as "hemiplegia cruciata". At the level of upper cervical spinal cord, the fibers for upper limp and lower limb cross the midline at the different levels. Hemiplegia cruciata is produced by involvement of the crossed arm and uncrossed leg fibers of the pyramidal tract at the level of the decussation of the pyramid.Etiology has been reported to be hemorrhage, occlusion of the anterior spinal artery and trauma such as fracture of the odontoid process, but hardly due to spinal cord tumor. It has been said that extramedullary tumor at this level is very difficult to be diagnosed because of varied and strange symptoms. So early diagnosis is important to understand the anatomy of this level.
西日本整形・災害外科学会の論文