Fig. 2.

A 62-year-old male presented with right side weakness and global aphasia.

A. Angiogram of the left internal carotid artery shows a severe stenosis in the horizontal segment of the left middle cerebral artery.

B. The angiogram obtained after angioplasty shows the relieved stenosis and improved flow. The patient's symptoms slowly improved except for some mild weakness and expressive aphasia that remained after there was symptom aggravation two years later.

C. MR angiography obtained at the time of the symptom aggravation reveals complete occlusion of the left horizontal segment of the left middle cerebral artery.