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題名 | 內聽道腦膜瘤--病例報告=Meningioma of the Internal Auditory Meatus--Case Report |
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作者 | 黃鈞儒; 賴仁淙; 李祖信; | 書刊名 | 中華民國耳鼻喉科醫學雜誌 |
卷期 | 35:1 民89.01-02 |
頁次 | 頁51-54 |
分類號 | 416.861 |
關鍵詞 | 腦膜瘤; 內聽道; 經乙狀竇後途徑; Meningioma; Internal auditory canal; Retrosigmoid approach; |
語文 | 中文(Chinese) |
中文摘要 | 非聽神經瘤之內聽道腫瘤極為罕見。本科於1997年10月經驗1名47歲女性,因單側耳鳴及漸進性聽障來診。聽力檢查顯示右耳70dB平坦型感覺神經性聽障,右耳語言辨明度只有24%,腦幹聽性反應在該側全無波形出現,核磁造影檢查證實為右側內聽道內腫瘤。我們採經乙狀竇後途徑之手術方式進入內聽道,在前庭神經與顏面神經間,發現一個疑似由前者所長出之小腫瘤。病理報告為腦膜瘤而非聽神經瘤。術後病人未發生任何聽力惡化或顏面神經麻痺,術後追蹤一年半,腫瘤無復發跡象。 |
英文摘要 | It is very that tumors located within the internal auditory canal are not acous-tic neuromas. In October 1997, we treated a 47-year-old woman who had suffered from right side progressive hearing loss and persistent tinnitus for 1 year. Audiometry revealed a 70 dB flat-shaped sensorineural hearing loss of the right ear. Speech discrimination (PB score) of the right ear was only 24%. No waveforms of right auditory brainstem responses were present. Magnetic resonance imaging revealed a small enhanced mass in the righr IAC. A retrosigmoid approach to the right IAC was performed, and a small tumor between the vestibular nerve and facial nerve was found. The tumor seemed to originate from the vestibular nerve. Pathologic examination confirmed a meningioma rather than an acoustic neuroma. Postoperatively, neither facial nerve dysfunction nor deterioration of hearing was noted. No evidence of tumor recur-rence was noted in the 18 months of follow-up. |
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