蝸牛血管条の老人性変性に関する病理組織学的研究

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Not only the sensory and the neural elements of the cochlea, the stria vascularis also tends to degenerate in aging. The purpose of the present surface preparation study is to demonstrate aging degeneration of the human stria vascularis in wide views under the light microscope. A special reference was made to the replacement structures in the stria vascularis after substantial degeneration. Thirty-five human temporal hones were dissected in this study. The surface structure of the human stria vascularis was demonstrated by silver staining in both normal and pathological cases. Degeneration of the stria vascularis in a small area was quite often found in old patients. There were different types of changes in the area of strial atrophy. In the first type of atrophy, the bordering cells replaced the marginal cells. This type of replacement was found in the specimens in which strial atrophy was confined in ., small area of bordering regions. In the second type, flat margical cells covered the atrophied area. This type of change was most often found in an area of small sporadic atrophy of the stria vascularis. While in the third type, the spiral prominence cells were found replacing the margical cells. This type of replacement was most often found in severe strial strophy involving the entire width of the stria vascularis. A special attention was also paid to the degenerating capillaries of the stria vascularis. Blood vessels of the stria vascularis were quite resistant in degeneration. However, as degeneration advanced, they became of smaller calibre and less tortuous in their extension.
社団法人日本耳鼻咽喉科学会の論文

蝸牛血管条の老人性変性に関する病理組織学的研究

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