• False-positive computed tomography with air cisternography is suspected with either air in the lateral internal auditory canal or a flat filling defect. False-negative air cisternography should be suspected if the internal auditory canal has a mottled appearance or if audiometric or auditory brain-stem response deficit progresses.
(Arch Otolaryngol Head Neck Surg 1986;112:769-772)
Barrs DM, Vedder JS. Problems in Air Cisternography. Arch Otolaryngol Head Neck Surg. 1986;112(7):769–772. doi:10.1001/archotol.1986.03780070081017
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