FIG 4. Patient 4 presented with nonfluent aphasia and alternating fluctuating hemiparesis and left facial droop.

A and B, Axial DW images show asymmetric regions of restricted diffusion in the anterior centrum semiovale that do not explain the motor neurologic deficits.

C, Follow-up MR image obtained 39 months later shows minimal scattered demyelination. The patient was neurologically intact.