title: False diagnosis of acoustic neuroma due to subdural injection during gas CT cisternogram.
abstract: Gas CT cisternography is a reliable examination for the detection of small acoustic neuromas. False-positive or equivocal findings do result, however, from a small number of these examinations. In this case report inadvertent subdural injection of gas caused diagnostic difficulties.
mesh_terms: D000293:Adolescent; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D009464:Neuroma, Acoustic / Q000000981:diagnostic imaging*; D010579:Petrous Bone / Q000000981:diagnostic imaging; D011011:Pneumoencephalography / Q000379:methods*; D013355:Subdural Space; D014057:Tomography, X-Ray Computed / Q000379:methods*