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Case Reports
. 2012 Jul 9:2012:bcr0320126138.
doi: 10.1136/bcr-03-2012-6138.

Unusual association of Arnold-Chiari malformation and vitamin B12 deficiency

Rajesh Verma  1 , Heramba Narayan Praharaj
Affiliations
Case Reports

Unusual association of Arnold-Chiari malformation and vitamin B12 deficiency

Rajesh Verma et al. BMJ Case Rep. .

Abstract

Arnold-Chiari malformations are a group of congenital or acquired defects associated with the displacement of cerebellar tonsils into the spinal canal. First described by Chiari (1891), this has various grades of severity and involves various parts of neuraxis, for example, cerebellum and its outputs, neuro-otological system, lower cranial nerves, spinal sensory and motor pathways. The symptomatology of Arnold-Chiari malformations may mimic multiple sclerosis, primary headache syndromes, spinal tumours and benign intracranial hypertension. We highlighted a case of Chiari type I malformation, who presented with posterolateral ataxia associated with significant vitamin B(12) deficiency. The patient was supplemented with vitamin B(12) injections and showed remarkable improvement at follow-up after 3 months.

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Figures

Figure 1
Figure 1
(A) MRI T2-weighted saggital image demonstrated tonsillar herniation. (B) MRI T2-weighted image on coronal section revealed tonsillar herniation below the foramen magnum.
Figure 2
Figure 2
MRI, T2-weighted image of same patient showed the presence of syrinx.
See this image and copyright information in PMC

References

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