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頁籤選單縮合
題 名 | Magnetic Resonance Imaging of Parotid Oncocytoma=腮腺嗜酸性細胞瘤之磁振造影影像 |
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作 者 | 呂南翰; 郭忠民; 高志賢; 葉力仁; 李懿蒼; 歐長憲; 楊子賢; | 書刊名 | Journal of Radiological Science |
卷 期 | 36:3 2011.09[民100.09] |
頁 次 | 頁165-168 |
分類號 | 416.8 |
關鍵詞 | 嗜酸性細胞瘤; 良性腫瘤; 腮腺; |
語 文 | 英文(English) |
英文摘要 | Oncocytomas are a group of rare neoplasms occurring in the parotid gland and account for less than 1% of all salivary gland tumors. Oncocytoma is a benign tumor composed of oncocytes with many hyperplastic mitochondria, usually presenting a solitary nodule. We reported a rare case of a slow-growing parotid oncocytoma in a 73-year-old woman who presented with a palpable mass in the left infra-auricular region for about 7 years. MRI showed a welldefined hypointense mass on T1-weighted images (T1WI) and iso- to slightly hypointensity on short inversion time inversion recovery (STIR) images compared to the parotid gland parenchyma. Moderate tumor enhancement was noted after intravenous gadolinium-based contrast medium administration. The patient underwent left parotidectomy and the histopathological examination confirmed the diagnosis of oncocytoma. The characteristic MR imaging features with their differential diagnosis are discussed and literatures reviewed. |
本系統中英文摘要資訊取自各篇刊載內容。