内耳奇形の画像診断と神経耳科学的所見

概要

論文の詳細を見る
In our hospital inner ear anomalies were found radiologically in ten patients with profound sensorineural hearing loss. Of the ten patients,5 had a narrow internal auditory canal,4 showed dilated vestibule, one showed aplasia of the cochlea and in one patient there was tapering of the internal auditory meatus and facial canal because of abnormal proliferation of the petrosal bone. In 3 patients poor responses in caloric test and galvanic body sway test (GBST) were found. This means some retro-labyrinthine disorders. As in cases with severe deafness audiological recruitment tests are impossible to do, but, instead GBST can be used for detecting of retro-labyrinthine disorders. Not only tomography and CT scanning of the temporal bone but also caloric test and GBST are important techniques because they can reveal functional features of any inner ear anomalies.
耳鼻咽喉科臨床学会の論文