Structural brain correlates of neurologic abnormalities in multiple sclerosis.

We examined the relationship between cerebral magnetic resonance imaging (MRI) findings and urinary dysfunction in 70 consecutive patients with definite multiple sclerosis. MRI-weighted lesion scores for seven different brain regions were recorded according to the number and size of cerebral lesions. Thirty-two subjects (46%) had urinary symptoms and 38 (54%) were asymptomatic. Subjects with urinary symptoms exhibited greater overall functional disability and a higher midbrain MRI-weighted lesion score than asymptomatic patients. No statistically significant group differences were found for the other brain regions.