胸腺瘤螺旋CT表现与其WHO病理分型对照研究

Comparative study on spiral CT imaging and WHO pathological typing of thymoma

目的:探讨胸腺瘤螺旋CT影像特征与其WHO病理学分型之间的相关性。方法:分析84例病理证实的胸腺瘤的CT影像特征与其WHO分型之间的相关性。结果:螺旋CT征象上表现有分叶、胸膜、心包及大血管受侵犯及尖角征/锯齿征的胸腺瘤,A型、AB型与B型、胸腺癌两大类之间有显著差异(P<0.05),而肿块大小、肿块密度均匀与否、纵隔脂肪线存在与否两者之间无显著差异(P>0.05)。结论:螺旋CT对A型、AB型与B型、胸腺癌可以做出较为正确的分类,但较难区分A型与AB型、B型与胸腺癌。

Objective：To investigate the correlation between the characteristics of spiral CT imaging and WHO pathological typing of thymoma. Methods ： Eighty - four patients with thymoma identified by pathological diagnosis were submitted into this study. The correlation between the characteristics of spiral CT imaging and the WHO pathological typing was analyzed. Results： There were significant differences between group A （Type A and AB） and group B （Type B and thymic carcinoma） in lobular contours, cusp angle -like or sawtooth- like margins, and the tumor invasion to pleural membrane, pericardium and great vessels （P 〈 0.05 ）. There was no significant difference in tumor size, density homogeneity and fatty line of mediastina between the two groups （ P 〉 0.05 ）. Conclusion： The spiral CT can correctly make classification between group A （Type A and AB ） and group B （Type B and thymic carcinoma ）, but it is difficult to differentiate Type A from AB and Type B from thymic carcinoma.