Abstract
This meeting was held at Marriott's Desert Springs Resort, Palm Desert, Calif, April 29 and 30, 1995. Current management of bilateral acoustic tumors was the topic addressed by Derald E. Brackmann, MD , Los Angeles, Calif, during the William F. House lecture. Recent genetic analysis has shown the neurofibromatosis type 2 genetic defect to be a deletion of a tumor suppressor gene on the long arm of chromosome 22. Magnetic resonance imaging with gadolinium is the most cost-effective screening tool for relatives of patients with neurofibromatosis type 2. Options for treatment include observation, surgery (hearing preservation; no hearing preservation), and the gamma knife. The recently approved auditory brain-stem implant is an eight-plate electrode unit that is inserted into the lateral recess of the fourth ventricle. The auditory brainstem implant has shown promising results in patients with neurofibromatosis type 2.
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