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題 名 | CT and MR Imaging Manifestation of Lipochoristomas in Internal Auditory Canal: A Case Report=內聽道脂肪迷離瘤在電腦斷層攝影及磁振造影之表現:病例報告 |
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作 者 | 王明宗; 陳志程; 蔡宗佳; 陳泰源; 曾文盛; 麥志輝; 蔡仁明; 吳泰清; | 書刊名 | 中華放射線醫學雜誌 |
卷 期 | 31:1 民95.02 |
頁 次 | 頁35-38 |
分類號 | 416.8 |
關鍵詞 | 電腦斷層; 內聽道; 脂肪迷離瘤; 脂肪瘤; 磁振造影; Computed tomography; CT; Internal auditory canal; Lipochoristomas; Lipoma; Magnetic resonance; MR; |
語 文 | 英文(English) |
中文摘要 | 內聽道脂肪迷離瘤非常罕見且為良性腫瘤,大部份為意外發現,若無明顯臨床症狀只須保守治療即可,此病灶在影像上有其特徵性。我們報告一年輕女性有明顯臨床症狀,電腦斷層發現在內聽道有一個脂肪密度的腫瘤。磁振造影呈現出T1高訊號,T2低訊號,在注射完顯影劑後並無明顯顯影劑增強現象。後來病人因症狀持續加劇而接受手術治療,病理組織為脂肪迷離瘤。 |
英文摘要 | A 19-year-old woman presented with a history of right-sided hearing loss with ipsilateral tinnitus and fullness for months. Her audiogram revealed a sen-sorineural hearing loss in right ear with 56% dis-crimination and a speech reception threshold of 55 dB. Usually a speech reception threshold greater than 20 dB threshold level is considered as hearing impairment, either sensorineural, conductive or mixed cause. Computed tomography scan showed a 10 x 6 mm low density lesion measuring -30 Hounsfield units within the right internal auditory canal. Magnetic resonance imaging revealed that the lesion is of high signal intensity on T1-weighted images and intermediate signal intensity on T2-weighted images, both isointense to subcutaneous fat signal. The gadolinium-enhanced T1-weighted images demonstrated no obvious enhancement. The patient received tumor resection due to progressive symptoms and the pathologic result was lipochoris-toma. |
本系統中英文摘要資訊取自各篇刊載內容。