Cochlear Hydrops in Association with Collapsed Saccule and Ductus Reuniens

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Abstract
Histopathological evidence from five human temporal bones with endolymphatic hydrops limited to the cochlea shows pathological obliteration of their saccules and/or ductus reunientes. We suggest that this finding supports the theory of longitudinal flow of endolymph. The anatomical distribution of endolymphatic hydrops is related to the location of the blockage which may occur anywhere from the ductus reuniens to the endolymphatic sac. Atrophy of sensorineural structures of the cochlea is severe in these five temporal bones and is presumed to be caused by the original disorders rather than occurring secondary to the endolymphatic hydrops.

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