The relationship of stria vascularis volume and cochlear duct volume.

To determine whether stria vascularis volume correlated with cochlear duct volume, 1,180 human temporal bones were examined. Fifty-eight ears in 44 persons showed the presence of endolymphatic hydrops. Strial atrophy was found in 143 ears in 83 persons, in five of which it was severe. Eight cases of endolymphatic hydrops occurred in the presence of mild to moderate strial atrophy. A decrease in cochlear duct volume usually accompanied severe strial atrophy. However, a case in which cochlear duct volume was normal in the presence of severe strial atrophy was seen. Cochlear duct volume does not always correlate with stria vascularis volume.