CT和MRI在腮腺良、恶性肿瘤鉴别诊断中的价值

目的:研究CT及MRI对腮腺良恶性肿瘤的鉴别诊断价值.方法:以2016年1月—2019年2月收治的69例在我院治疗的腮腺肿瘤患者作为研究对象,良性病变49例,恶性病变20例,分别对两组患者开展CT和MRI检查,分析不同病变的CT和MRI检查结果之间的差异.结果:良性肿瘤CT检查边界清晰、钙化及囊变检出率高于恶性肿瘤(P...

Diagnostic value of CT and MRI in benign and malignant tumors of parotid gland

Objective:To study the significance of CT and MRI in the differential diagnosis of benign and malignant tumors of parotid gland.Methods:From January 2016 to February 2019,69 patients with parotid gland tumor treated in our hospital were taken as the research objects,including 49 cases of benign lesions and 20 cases of malignant lesions.CT and MRI were performed on the two groups of patients respectively,and the differences between CT and MRI results of different lesions were analyzed.Results:On the CT images,benign tumor had clear boundary,the calcification and cystic change detection rate was higher than that of malignant tumor(P<0.05).The benign tumor volume was smaller than malignant tumor(P<0.05).The difference of DCE-MRI time signal intensity curve between the two groups was statistically significant(P<0.05).In benign tumor group,most pleomorphic adenoma were typeⅠDCE-MRI time-signal intensity curve,most adenolymphomas were mainly typeⅡDCE-MRI time-signal intensity curves,and most malignant tumors were typeⅢDCE-MRI time-signal intensity curve.The ADC value of benign tumor was 1.69±0.19 and that of malignant tumor was 1.02±0.15.The ADC value of benign tumor was higher than that of the malignant group(t=14.062,P=0.000).Malignant tumor were negatively correlated with the rate of sharpness of borders,calcification,cystic degeneration,and ADC value,and were positively correlated with DCE-MRI time-signal intensity curve and tumor size(P<0.05).For the diagnosis of malignant parotid gland tumor,the specificity of combined diagnosis(65.12%)was higher than that of CT and MRI alone(48.98%,18.37%).Conclusion:The combined diagnosis of CT and MRI can significantly improve the diagnosis efficiency of patients with malignant parotid tumor.