外耳道膽脂瘤：初步經驗報告

External Ear Canal Cholesteatoma: A Preliminary Report

吳哲民(Che-Min Wu) ； 蘇志英(Chih-Ying Su) ； 呂鎮中(Chun-Chung Lui)

《中華民國耳鼻喉科醫學會雜誌》 31卷4期 (1996/08) Pp. 273-278

https://doi.org/10.6286/1996.31.4.273

摘要

膽脂瘤常見於中耳及乳突而罕見於外耳道。外耳道膽脂瘤中自發性的較為常見。耳鏡檢查可見外耳道壁的侵蝕及角質鱗狀落屑的過度堆積，耳膜正常，病人常有反覆性耳漏及耳鈍痛等症狀。文獻上曾有報告先天性耳畸形、後天性外傷、手術後、反覆發炎或骨瘤所引起的耳道狹窄，由於不易觀察耳道內病變，加以初期症狀並不明顯，較易導致外耳道膽脂瘤的形成和擴展。本文報告著者所經歷的11例蛉耳道膽脂瘤而須接受手術的病例，根據治療這些患者的成功經驗，我們認為外耳道狹窄患者由於可能導致外耳道膽脂瘤宜儘可能早日加以手術治療並長期追蹤。

關鍵字

外耳道膽脂瘤 ； 閉塞性角化病

並列摘要

Cholesteatoma are found almost exclusively in the middle ear and mastoid. Occasionally this disease is seen in the external ear canal. Spontaneous ear canal cholesteatoma can be detected by careful review of clinical presentations of recurrent purulent ear discharge and chronic ear dull pain, and otoscopic findings of a focal area of osteitis and bone sequestration surrounded by hard wax and keratin debris. Ear canal cholesteatoma can be induced by congenital and acquired canal stenosis or atresia as a sequelae of ear trauma, post-ear surgery, recurrent inflammation, ear canal mass (osteoma) etc.. Irreversible damage by diffuse cholesteatoma may have occurred as a result of difficult observations of the stenosed ear canal conditions and the lack of early symptoms and signs of this disease.
In this report, 11 cases with ear canal cholesteatoma were reviewed. All of them were successfully treated by the correction of the underlying diseases and removal of the cholesteatoma. With thess 11 cases’ experience, we especially stress the importance of continuous follow-up and early correction of congenital and acquired canal stenosis on the prevention and treatment of ear canal cholesteatoma.

並列關鍵字

ear canal cholesteatoma ； keratosis obturans