耳管から鼓室に至った鼓室内異物による慢性中耳炎の1乳児例

Chronic Otitis Media Caused by Foreign Body in the Tympanic Cavity Transported Through the Auditory Tube in an Infant

　はじめに

　耳管，中耳の疾患は多種にわたり日常頻繁にみられるが，この部の異物の報告は少ない。特に外耳道経由ではない鼓室内，耳管異物は，1945年以降，われわれが検索し得た限りにおいては水野ら^1），鳥山ら^2）の2例にすぎない。今回われわれは，口腔内から耳管経由と考えられた鼓室内，耳管異物症例を経験したので，若干の考察を加え報告する。

A 1 year and 6 months old boy with chronic otitis media presented with ear discharge in the right ear and treated with antibiotics for 2 months.

His tympanic membrane was bulging and his ear canal was remarkably injected. A lurge amount of serous ear discharge was observed and soon the earcanal was filled with granuloma.

At the operation a big and long piece of foreign body was found in the tympanic cavity, and granuloma was filled in the tympanic cavity and surrounded the foreign body.

The malleus and incus were found in the ear canal.

After operation it was revealed that he was play-ing with a chopstick in his mouth and fell to the ground. After this episode he developed ear dis-charge.

The foreign body in the tympanic cavity was rare and there were only two cases previously reported in Japan.