were associated with more eccentric distribution of the plaque,
but symptomatic lesions were both eccentric and concentric. It
may be that concentric lesions are more advanced plaques as
compared with eccentric lesions, because >50% of the vessel
wall (in the sagittal view) is affected in case of a concentric
lesion.17 We also found that all DSA-proven MCA stenoses
yielded a positive/outward-remodeling pattern. It might be
interesting to examine whether differences exists in remod-
eling pattern between symptomatic and asymptomatic MCA
stenoses in a group not selected based on DSA. Besides the