A 35 year old woman presents with a band-like sensation around her abdomen, leg weakness and bladder dysfunction. On questioning she reveals that she had an episode around a year ago, where she experienced left eye pain and problems with her vision, this resolved within a few weeks and she did not seek medical attention. On examination she has increased tone in her legs, bilateral weakness and hyperreflexia. What is the most important investigation to confirm the likely diagnosis?

14 votes
CT brain and spine
 
7% / 1 vote
MRI brain and spine
 
93% / 13 votes
Nerve conduction studies
 
0% / 0 votes
Lumbar puncture
 
0% / 0 votes
Nerve biopsy
 
0% / 0 votes


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