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PLEASE NOTE THE RESULTS REPORTED IN THIS ARTICLE (posted by Judith Richar= ds on July 30) WERE FROM A STUDY OF A PARTICULAR GROUP OF PATIENTS AT ONE CENTER AND SHOULD NOT BE APPLIED TO PALLIDOTOMY PATIENTS AT OTHER CENTERS= NECESSARILY. BECAUSE ALL *PALLLIDOTOMIES ARE NOT CREATED EQUAL* Surgery for Parkinson's disease carries neuropsychologic risks WESTPORT, Jul 29 (Reuters) - Unilateral posteroventral pallidotomy for the treatment of Parkinson's disease is sometimes associated with modest cognitive impairment and behavioral changes, Canadian researchers warn in the July issue of Neurology. Dr. Lisa L. Trepanier, of The Toronto Hospital-Western Division, in Ontario, Canada, with colleagues there and elsewhere, studied 42 patients with advanced Parkinson's disease who had "...substantial disability because of frequent 'off' periods or drug-induced dyskinesias." Don 50/17 <>< Dr. Don Berns 110 Delano Dr. Pittsburgh, PA 15236 412-650-6812 <[log in to unmask]>