In this retrospective review of the 160 acoustic neuroma cases treated at The University of Iowa between 1980 and 1991, follow-up information was obtained for 82% by telephone interview. Postoperative tinnitus was a symptom reported by 75% of the acoustic neuroma patients. Overall, among patients with tinnitus preoperatively, the condition postoperatively was absent in 45%, lessened in 17%, unchanged in 30%, and greater in 8%. Detailed results are compared to other series and significant differences in the depth of comparison described.
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