摘要目的 探讨CT检查在腮腺多形性腺瘤与腺淋巴瘤鉴别诊断中的价值.方法 回顾性分析经手术病理证实的12例腮腺多形性腺瘤与8例腮腺腺淋巴瘤患者的CT平扫及增强扫描资料,分析内容包括肿瘤数量、部位、边界、CT增强特征等.结果 腮腺多形性腺瘤12例,均为单发,位于腮腺浅叶10例,后下象限8例,边界均清晰.腮腺腺淋巴瘤8例(13个病灶),均位于腮腺浅叶,后下象限边界均清晰.腮腺多形性腺瘤动脉期强化幅度(11±4)Hu,腮腺腺淋巴瘤动脉期强化幅度(31±11)Hu,差异有统计学意义(P＜0.05)；腮腺多形性腺瘤静脉期强化幅度(14±6)Hu,腮腺腺淋巴瘤静脉期强化幅度(28±10) Hu,差异有统计学意义(P＜0.05).结论 多层螺旋CT平扫及增强扫描能够从形态学及血流动力学方面反应腮腺多形性腺瘤与腺淋巴瘤的本质区别,在二者的鉴别诊断中具有重要价值.

abstractsObjective To investigate the value of CT in the differential diagnosis of parotid pleomorphic adenoma and adenolymphoma.Methods The CT findings of 12 cases parotid pleomorphic adenoma and 8 cases adenolymphoma proved by pathology were reviewed retrospectively,including their number,location,border,CT enhancement characteristics,and so on.Results Twelve cases of parotid pleomorphic adenoma were single,10 cases on the parotid gland in superficial lobe,8 cases on the posterior inferior quadrant.Eight cases (13 lesions) of adenolymphoma,were all on the parotid gland in superficial lobe and posterior inferior quadrant,with clear boundary.Enhanced arterial phase of parotid pleomorphic adenoma was (11 ± 4) Hu,and of adenolymphoma was (31 ± 11) Hu,the difference was statistically significant (P ＜0.05).Enhanced venous phase of parotid pleomorphic adenoma was(14 ± 6) Hu,and of adenolymphoma was (28 ± 10) Hu,the difference was statistically significant (P ＜0.05).Conclusions CT scan can reflect the essential difference dynamicly and comprehensively from the combination of hemodynamic and morphological aspects between parotid pleomorphic adenoma and adenolymphoma,it has an important value.