随意性他覚的耳鳴の2症例

VOLUNTARY OBJECTIVE TINNITUS A REPORT OF TWO CASES

　Ⅰ．緒言

　他覚的耳鳴は，わが国では1903年久保教授の報告^13）を始めとして，多数の報告があり，まれなものではないが，その大部分は不随意的なものである。私は随意性他覚的耳鳴の2例を経験したので報告する。

　Two cases of objective tinnitus aurium are reported. In one case a woman, aged 64, was affected with a rolling-noise discernible to the examiner, for an instant, whenever the patient moved her head. The cause of this noise was found to be the presence of a stony foreign body 1.1 cm in diameter in the mastoid cavity.

　In the second case a man, aged 42, was affected with a clonic spasm of the soft palate with an objective noise in the left ear amounting to 25 db in tonal intensity. No connection was established between this noise and the opening and closing of the mouth; no vibratory response of the tympanic membrane was seen. Eustachian tube origin was considered as the sourse of this noise.