cholesteatoma was present in 18 patients (90%) and granulation tissue was present in 2 patients (10%). the lateral semicircular canal was the site of labyrinthine fistula.
results:(1)the geniculate ganglion (gg) was in the layer of lateral semicircular canal .
结果:(1)面神经膝状神经节(gg)多位于外半规管层面。
result: of normal ears, 86.7% of the full lateral semicircular canal could be shown at the axial level, and the superior and posterior semicircular canal could not be fully displayed;