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Neurology

Question
10 out of 11
 

Subacute combined degeneration due to Vit B12 deficiency mainly involves: (PGI May 2009)



A Peripheral nerve
B Corticospinal tract

C Posterior column
D Spinocerebellar tract

E Spinothalamic tract

Ans. B

Corticospinal tract & C. Posterior column

Extra edge: Vitamin B12 deficiency does not produce myopathy.

Extra Edge: Hypocupric (Low serum copper) Myelopathy (Ref. Hari-18th ed., pg- 3374)

This myelopathy is virtually identical to subacute combined degeneration and probably explains many cases previously described with normal serum levels of B12).

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