腮腺多形性腺瘤与腺淋巴瘤的CT影像特征及对比分析

目的：探讨腮腺多形性腺瘤与腺淋巴瘤的CT影像特点,提高对两者的鉴别诊断能力。方法回顾性研究经手术病理证实的13例多形性腺瘤及9例腺淋巴瘤的CT表现,并做对比分析。结果13例多形性腺瘤均为单发,11例位于腮腺非后下象限,增强11例表现为持续性或延迟强化,呈“慢进慢出”改变；9例腺淋巴瘤3例多发共13个病灶,9个病灶位于腮腺后下象限,增强9个病灶动脉期显著强化,延迟期强化减退,呈“快进快出”表现。结论腮腺多形性腺瘤与腺淋巴瘤 CT 影像表现各有特点,掌握各自特征性影像表现并结合临床资料,绝大多数病灶术前可以做出正确诊断。

CT imaging characteristics and comparative analysis of parotid pleomorphic adeonoma and adenolymphoma

Objective To investigate CT image features of pleomorphic adenoma and adenolymphoma,and to improve the diagno-sis accuracy.Methods CT data of 1 3 cases of pleomorphic adenomas and 9 cases of adenolymphomas confirmed by pathology were retrospectively analyzed and compared.Results All 1 3 cases of pleomorphic adeonoma were solitary lesions,in which 1 1 cases were located in the non posterior inferior quadrant,and 1 1 cases showed persistent or delayed enhancement,with “slowly forward and slowly quit”enhancement performance.In all of the 9 cases of adenolymphoma,3 cases were multiple lesions.In total of 1 3 lesions, 9 lesions were located in the posterior inferior quadrant,and 9 lesions were significantly enhanced in the arterial phase and enhance-ment was decreased in the delayed phase,which showed “quickly forward and quickly quit”.Conclusion CT image features of pleo-morphic adenoma and adenolymphoma are different.Most of lesions can be diagnosed correctly before surgery by using image fea-tures with clinical information.