Osteomas of the External Auditory Canal – Report of Three Cases

外耳道骨瘤－三例報告

梁碩方(Shuo-Fang Liang) ； 呂宗禧(Tsung-His Lu) ； 曾惠仁(Hwei-Zen Tseng) ； 鄭良信(Stephen Liang-Hsin Cheng)

《中華民國耳鼻喉科醫學會雜誌》 31卷4期 (1996/08) Pp. 330-335

https://doi.org/10.6286/1996.31.4.330

摘要

外耳道骨瘤是良性的骨質異常生長，它在耳道的皮膚下發展出半球狀或有蒂的腫塊，而且常造成阻塞。外耳道道骨瘤有兩種形式，多發性的緻密骨瘤或稱外生骨疣及單一疏鬆骨瘤。外生骨疣是外耳道曘常遇見的腫瘤，通常是兩側性的，而且幾乎都發生在冷水裏游泳的男性身上。它們為光滑的圓形結節，在正常皮膚下包覆著極硬的骨頭，而且以寬闊的基底部附著在骨性外耳道的內側部。通常是沒有症狀的，有症狀時才須切除。
單一性疏鬆骨瘤，不像外生骨疣，是一個外耳道較少見的病灶。它是在接近骨質外側端的良性單一有蒂的骨性腫瘤。聽力喪失，不舒服，耳漏，耳痛及頭痛是常見的症狀。如果不予治療，最終都會堵塞聽道，所以應建議病人開刀割除。茲報告2例外耳道外生骨疣（緻密骨瘤）和1例外耳道疏鬆骨瘤，並討論其外科治療。

並列摘要

Osteomas of the external auditory canal are benign abnormal growth of bone which develops as semi-spherical or pedunculated masses beneath the skin of the canal and can often cause obstruction. Osteomas occur in the external auditory canal in two forms; multiple compact osteomas or so called “exostosis” and single cancellous osteomas. Exostoses, the most commonly encountered tumors of the external auditory canal, are usually bilateral and occur mostly in male cold water swimmers. They appear as smooth rounded nodules consisting of extremely hard bone covered with normal skin and attached by a broad base to the medial portion of the osseous external auditory canal. Usually they are asymptomatic and only require surgical excision if they become symptomatic.
Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal. They are benign single pedunculated bony tumors near the lateral end of the bony portion. Hearing loss, discomfort, otorrhea, earache, and headache are common symptoms. If not treated, they eventually occlude the meatus so surgical removal should be advised in every case. Two cases of exostoses and one case of cancellous osteoma of the external auditory canal were reported. The surgical approaches were discussed.

並列關鍵字

osteoma ； exostosis ； external auditory canal