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January 1985

Changing Concepts of Acoustic Neuroma Diagnosis

Author Affiliations

From the Department of Otolaryngology—Head and Neck Surgery, Wilford Hall US Air Force Medical Center, Lackland AFB, San Antonio, Tex (Drs Barrs and Olson); and the Otologic Medical Group, Inc, Los Angeles (Drs Brackmann and House).

Arch Otolaryngol. 1985;111(1):17-21. doi:10.1001/archotol.1985.00800030051004

• Three hundred five acoustic neuromas were reviewed to determine the sensitivity of combining the auditory brainstem response (ABR) and the intravenous contrast-enhanced computed tomogram (CT) as screening tests for acoustic neuroma diagnosis. The ABR detected 98% of the tumors. The enhanced CT demonstrated 97% of tumors larger than 1.5 cm, but only 48% of neuromas 1.5 cm or smaller. The combination of both ABR and enhanced CT, used as the initial screening tests, identified 99% of the neuromas. We conclude that ABR, with enhanced CT as needed, is an accurate screening protocol. This method can be used as an alternative to the traditional ABR, electronystagmography, and internal auditory canal tomograms.

(Arch Otolaryngol 1985;111:17-21)

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