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Acoustic Tumor SurgeryPrognostic Factors in Hearing Conservation
Clough Shelton, MD;
Derald E. Brackmann, MD;
William F. House, MD;
William E. Hitselberger, MD
Arch Otolaryngol Head Neck Surg. 1989;115(10):1213-1216.
Abstract
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• Preoperative selection criteria for hearing conservation surgery in patients with acoustic tumors continues to be unresolved. The level of hearing that is worth saving is still debatable. However, most acoustic tumor surgeons agree that hearing preservation is less likely the larger the tumor. We reviewed the results of 106 middle fossa acoustic tumor removals with attempted hearing preservation. Measurable postoperative hearing remained in 59% of 97 cases analyzed for postoperative hearing results. Tumor size, preoperative auditory brain-stem response, and preoperative electronystagmography were found to be useful in predicting successful postoperative hearing preservation. We found no correlation between the level of preoperative hearing and our ability to preserve measurable postoperative hearing. A new classification system is proposed for reporting hearing results after acoustic tumor surgery. It is based on functional hearing results and we believe it is simpler than previously proposed systems.
(Arch Otolaryngol Head Neck Surg. 1989;115:1213-1216)
Author Affiliations
From the Otologic Medical Group Inc, Los Angeles, Calif.
Footnotes
Accepted for publication March 3, 1989.
Presented in part at the International Symposium on Cranial Base Surgery, Pittsburgh, Pa, September 16, 1988.
Reprint requests to Otologic Medical Group Inc, 2122 W Third St, Los Angeles, CA 90057 (Dr Shelton).
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