Female, 44 years old, with multiple sclerosis and right-sided hemiballismus status post deep brain stimulator placement. Evaluate for interval changes. Please note that axial FLAIR images were inadvertently omitted from this examination. Arrangements will be made for the patient to return to complete the axial FLAIR sequence.A left-sided deep brain stimulator is in stable position with its tip terminating within the left basal ganglia.Ill-defined periventricular FLAIR hyperintensity is again seen with numerous superimposed more focal or cavitary lesions. The overall quantity and distribution of these lesions does not appear to have changed significantly. As before, a clustering of such lesions is seen within the left cerebellum also appearing similar to prior. All of these more focal lesions demonstrate marked T1 hypointensity. No edema or mass effect is detected. Thinning of the corpus callosum and generalized parenchymal volume loss appear similar to prior. No pathologic enhancement is seen. A developmental venous anomaly is redemonstrated in the right cerebellum.Paranasal sinus mucosal thickening is evident.
1.Stable positioning of the left-sided deep brain stimulator lead.2.Redemonstration of extensive parenchymal lesions compatible with multiple sclerosis showing no definite or significant interval change.