title: [Efficiency of radiodiagnosis of acoustic neurinomas. Changes in the clarification procedure within the last 10 years].
abstract: In a retrospective study we tried to define the diagnostic value of different x-ray studies in 43 histologically proved acoustic neuromas. We divided the examinations into such which definitely confirmed a clinical suspicion i.e. formed the last preoperative studies, and into others, which only increased the clinical suspicion. We were especially interested, whether or not Stenvers and transorbital projections of the petrous bones and internal acoustic canals and petrous bone tomographies were essentially confirming clinical diagnosis. Whereas 13 out of 37 Stenvers, 2 out of 5 transorbital projections and 14 out of 18 frontal tomographies increased the suspicion of an existing Neuroma, a true diagnostic confirmation was never possible with these 3 techniques. Vice versa out of 45 computertomographies 33 were confirming the clinical diagnosis and 1 increased the clinical suspicion, with 5 false negatives and 6 nonconclusive studies. CT and Air-CT-Cisternography represent today the definitive diagnostic studies. For economical reasons they should be employed early in the diagnostic course, in those cases with high clinical suspicion or when clinical symptoms suggesting AN persist.
authors.forename: A
authors.initials: A
authors.lastname: Nidecker
authors.forename: T
authors.initials: T
authors.lastname: Wehrle
authors.forename: M
authors.initials: M
authors.lastname: Elke
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D004526:Efficiency; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000000981:diagnostic imaging* / Q000473:pathology; D011011:Pneumoencephalography; D012189:Retrospective Studies; D014056:Tomography, X-Ray; D014057:Tomography, X-Ray Computed
vernacular_title: Effizienz der Radiodiagnostik von Akustikusneurinomen. Wandel des Abklärungsganges innerhalb der letzten 10 Jahre.