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A Case Presenting with Ataxic Gait and Dementia due to Vitamin B12 Deficiency without Megaloblastic Anemia or Subacute Combined Degeneration of the Spinal Cord Hisatake Iwanami 1 , Michito Tanaka 1 , Hideki Iwakawa 1 , Yoshimitu Takiguti 1 , Toshihiko Inukai 1 1Department of Internal Medicine,Dokkyo Medical University Koshigaya Hospital Keyword: vitamin B12 deficiency , dementia , ataxic gait pp.267-269
Published Date 2011/3/1
DOI https://doi.org/10.11477/mf.1416100862
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Abstract

 A 36-year-old man was admitted to our hospital because of subacute progressive ataxic gait and dementia. His blood test results vitamin B12 deficiency due to presence of anti-intrinsic factor antibody and his endoscopic examination findings showed chronic gastritis. Treatment was administered on the bass of on a diagnosis of vitamin B12 deficiency. Consequently, ataxic gait improved and dementia regressed. 123I-IMP cerebral blood flow scintigraphy conducted at 8 months after treatment initiation showed increased blood flow the area around the parietal lobe to the corpus callosum, and flow both temporal lobes to the hippocampus compared. The diagnosis was difficult in this case because the patient did not show the typical symptoms and complications associated with vitamin B12 deficiency, such as megaloblastic anemia, or subacute combined degeneration of the spinal cord. However, the disturbance in cerebral blood flow may be related to the dysfunction of higher brain function caused by vitamin B12 deficiency.

(Received: August 16,2010,Accepted: November 8,2010)


Copyright © 2011, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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