Kishi Masahiko, Sakakibara Ryuji, Nagao Takeki, Terada Hitoshi, Ogawa Emina
Neurology Division, Department of Internal Medicine, Sakura Medical Center, Toho University, Sakura, Japan.
Case Rep Neurol. 2009 Jul 21;1(1):41-46. doi: 10.1159/000226120.
Isolated hemiataxia after a medullary infarct is rare. We describe a case of isolated hemiataxia after a small infarct localized at the ipsilateral dorsolateral medulla. An 83-year-old man developed acute onset of ataxia in the left arm and in both legs. Speech and extraocular movement were normal, and he did not have any other neurological manifestations. Brain MRI showed a small infarct localized at the left dorsolateral medulla, which involved the inferior cerebellar peduncle. (123)ECD-SPECT showed hypoperfusion in the left cerebellar hemisphere without clear vascular territory. Neuroimaging findings for our patient suggested the involvement of the inferior cerebellar peduncle that projects to the cerebellum in our patient.
延髓梗死后继发孤立性偏侧共济失调较为罕见。我们描述了一例因同侧延髓背外侧小梗死导致的孤立性偏侧共济失调病例。一名83岁男性突发左臂和双腿共济失调。言语和眼球运动正常，且无其他神经学表现。脑部MRI显示左侧延髓背外侧有一小梗死灶，累及小脑下脚。(123)ECD-SPECT显示左侧小脑半球灌注减低，血管分布区域不明确。我们患者的神经影像学表现提示小脑下脚受累，该结构向我们患者的小脑投射。
