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A mastoidectomy is performed exposing the semicircular canals, venous sinus and dura covering the brain and spinal fluid. The semicircular canals are removed exposing the internal auditory canal. The dura is opened at the dotted lines.
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A mastoidectomy is performed exposing the semicircular canals, venous sinus and dura covering the brain and spinal fluid. The semicircular canals are removed exposing the internal auditory canal. The dura is opened at the dotted lines.
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