Plain radiography and tomography of the internal auditory canal for the diagnosis of acoustic neuroma.
In the series of 50 acoustic neurinomas (AN) the internal auditory canal (IAC) diameter and the diameter difference between the tumor and non-tumor side are compared with the sizes of the AN. No correlation is found. About 50% of the AN cases had normal ipsilateral IAC in plain and tomographic radiographies. A pathological IAC finding strongly favours AN, but the border between a normal and pathological finding is not an exact one. A normal plain and tomographic radiography does not exclude AN and further investigations cannot be avoided. Our conclusion is that plain radiograms and tomograms have no place in the modern diagnosis of AN.
Pyhtinen
J
J
Department of Diagnostic Radiology, University of Oulu, Finland.
Laitinen
J
J
Jokinen
K
K
D007758:Ear, Inner / Q000000981:diagnostic imaging*; D006801:Humans; D009464:Neuroma, Acoustic / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed