3种恶性成分的腮腺区多形性腺瘤癌变1例报告及文献复习

目的：探讨1例含有3种恶性成分的腮腺区多形性腺瘤癌变（CXPA）患者的诊断和预后，提高临床医生对该病的认识。方法：患者因左腮腺区肿物30年余伴疼痛1个月入院，经腮腺区彩超检查后行左腮腺区肿物切除术。结果：该患者手术过程顺利，术后病理诊断为CXPA，包含非特异性腺癌、导管癌和肌上皮癌3种恶性成分。结论：同时含有多种恶性成分的CXPA临床罕见，诊断困难，预后差，临床医师应提高对该病的认识。

Carcinoma ex pleomorphic adenoma composed of three malignant components in parotid gland:A case report and literature review

Objective:To investigate the diagnosis and prognosis of one patient with carcinoma ex pleomorphic adenoma (CXPA)composed of three malignant components in parotid gland,and to raise the clinicians'awareness of the disease.Methods:A patient was presented to hospital because of the mass in left parotid gland region for more than 30 years and the accompanied pain lasted for one month.After color ultrasonography,the left parotid gland tumor resection was performed. Results: The operation was successful. The postoperative pathological diagnosis results comfirmed as CXPA,it was composed of three malignant components,including non-specific adenocarcinoma,ductal carcinoma,and myoepithelial carcinoma.Conclusion:CXPA composed of three malignant components at the same time are extremely rare.CXPA is difficult to diagnose and its prognosis is poor.The clinicians are supposed to improve the understanding of CXPA.