 1/20/93, showed low voltage Delta over the left posterior quadrant and intermittent background slowing over the same region consistent with focal dysfunction in this quadrant. MRI Brain, 1/22/93: multiple focal and more confluent areas of increased T2 signal in the periventricular white matter, more prominent on the left; in addition, there were irregular shaped areas of increased T2 signal and decreased T1 signal in both cerebellar hemispheres; and age related atrophy; incidentally, there is a cavum septum pellucidum et vergae and mucosal thickening of the maxillary sinuses. Impression: diffuse bilateral age related ischemic change, age related atrophy and maxillary sinus disease. There were no masses or areas of abnormal enhancement. TSH