结论恶性肌上皮瘤是一种上皮性肿瘤，其亚型透明细胞型恶性程度较高。
Conclusions The malignant myoepithelioma was epithelial tumour. The malignant grade of clear cell type was higher.
在透明细胞脑膜瘤中肿瘤细胞的核一般位于中心，而不是像这例中的核偏位。
Nuclei of neoplastic cells in clear cell meningiomas are centrally located, not eccentric like in this case.
目的 研究环氧化酶-2（COX-2） 在人肾透明细胞癌组织中的表达，分析其表达水平与肿瘤分期的关系。
Objective To study the expression of cyclooxygenase-2 (COX-2) in renal clear cell carcinoma tissues and its relation with the clinical tumor stage.
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