Analysis Tools
hearing/vestibular/ear
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• the perilymphatic side of Reissner's membrane is transparent but the endolymphatic side is normal
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• the organ of Corti is absent from the first cochlear turn but present in the second cochlear turn
• in the second cochlear turn the inner and outer hair cells are normal but debris is seen in Nuel's space and the outer pillar cells
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• in the upper portion of the first turn of the cochlea outer hair cells are absent
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• in the upper portion of the first turn of the cochlea, vesicle formation is seen in the inner hair cells
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• some inner pillar cells show a cystic formation at the base of the cell
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• hearing is impaired with auditory evoked potential indicating some hearing loss at 90 db
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nervous system
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• in the upper portion of the first turn of the cochlea outer hair cells are absent
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• in the upper portion of the first turn of the cochlea, vesicle formation is seen in the inner hair cells
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• few spiral ganglia are seen in the first cochlear turn
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