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腮腺之上皮肌上皮細胞癌-病例報告

Epithelial-Myoepithelial Carcinoma of the Parotid Gland - Case Report

摘要


唾液腺內之上皮肌上皮細胞癌(epithelial-myoepithelial carcinoma) 為一種罕見的低度惡性腫瘤,約佔所有唾液腺腫瘤的1%。本院於1998年6月間經歷1例41歲女性病患,發現右側耳下一逐漸增大之腫塊已1個多月。理學檢查為一大小1*1cm 、堅硬、無痛、不可移動之腫塊。頸部電腦斷層掃描顯示,再右側腮腺淺葉內有一結節。患者於1998年9月接受腮腺淺葉切除手術,證實為腮腺之上皮肌上皮細胞癌。術後於門診追蹤至今1年8個月,無復發現象。由兩種細胞組成之特殊組織學型態,為上皮肌上皮細胞癌的主要特徵。因為這種病例罕見,期可考靠之預後因子尚未建立,故治療後仍應長期追蹤。

並列摘要


Epithelial-myoepithelial cearcinoma of the salivary glands is a rare, low-grade malignant tumor. It comprises about 1% of all salivary gland tumors We report a 41-year-old woman with a right infra-auricuar mass noted for more than one month. The initial size of the tumor was 1*1cm, and it was firm, non-tender and fixed. The CT scan of the neck showed a nodule over the superficial lobe of the right parotid gland. After suoerficial parotidectomy, the pathology revealed an epithelial-myoepithelial carcinoma of the parotid gland. Sinse surgery, there have been no sigh of recurrence after a follow-up of 1 year and 8months. The histology of biphasic cell populations is characteristic of this kind of tumor. In spite of the low-grade malignant manifestation in the majority of the reported cases, long term follow-up is indispensable after treatment because of a lack of reliable prognostic markers.

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