日本耳鼻咽喉科学会会報
Online ISSN : 1883-0854
Print ISSN : 0030-6622
ISSN-L : 0030-6622
鼓膜穿孔のない伝音難聴
とくに原因不明のキヌタ•アブミ関節障害例について
村嶋 龍太郎
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ジャーナル フリー

1990 年 93 巻 11 号 p. 1838-1846

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In order to elucidate the pathophysiology of an undetermined conductive deafness without perforation of the tympanic membrane, comparative study was made in several factor with conductive deafness which has normal tympanic membrane and may be due to inflammation.
Differences and similarities in the manner of ossicular damage were discussed in these conductive deafness.
The morbidity rate of conductive deafness without perforation of the tympanic membrane which was undetermined cause, was found in wide age group 7 to 56 years of age.
The site of damage was found at portion of the incudostapedial joint.
The origin of etiology was estimated may take part in inflammatory process.
We emphasized that such as undetermined conducitve deafness may increase according to increase of otitis media with effusion.

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