TM can be the presenting feature of MS. In individuals with acute partial TM and normal brain MRI, about 10-33 percent develop MS over a five to ten-year period. If the brain MRI shows lesions, the transition rate to clinically definite MS is known to be quite high, in the range of 80 to 90 percent within a few years. Those who are ultimately diagnosed with MS are more likely to have asymmetric clinical findings, predominant sensory symptoms with relative sparing of motor systems, MR lesions extending over fewer than 2 spinal segments, abnormal brain MRI, and oligoclonal bands in the CSF.