• Cranial computed tomography (CT) with gas cisternography is reported to be the most accurate method of detection of small acoustic tumors. However, five false-positive CT results experienced in three years are now reported. This is a false-positive rate of 22% for tumors with less than 5-mm protrusion into the cerebellopontine angle, and a false-positive rate of 50% for tumors with less than 2-mm protrusion. A false-positive result is suspected if no mass protrudes at the porus or if gas enters the lateral internal auditory canal.
(Arch Otolaryngol 1984;110:535-537)
Barrs DM, Luxford WM, Becker TS, Brackmann DE. Computed Tomography With Gas Cisternography for Detection of Small Acoustic Tumors: A Study of Five False-Positive Results. Arch Otolaryngol. 1984;110(8):535–537. doi:10.1001/archotol.1984.00800340047013
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