MSCT三期扫描在直肠癌术前TNM分期诊断价值  

The Diagnostic Value of Preoperative Staging of Rectal Carcinoma by MSCT Triple-Phase Scanning

作　　者：韩帅[1] 刘明[2] 李彩英[1] 张国建[3] 柳青[1] 尹兰英[1] 张俊霞[1] 

机构地区：[1]河北医科大学第二医院医学影像科,石家庄市050000 [2]河北医科大学第三医院肿瘤放射治疗科 [3]河北医科大学第三医院外科

出　　处：《中国肿瘤临床》2010年第18期1053-1056,共4页Chinese Journal of Clinical Oncology

摘　　要：目的:评价16层螺旋CT平扫及三期增强扫描对直肠癌术前诊断及TNM分期的诊断价值。方法:回顾性分析75例经病理证实的直肠癌,男性43例,女性32例,平均年龄57岁。所有患者术前采用16层螺旋CT平扫及三期增强扫描,所得数据行薄层及三维重组,对直肠肿瘤进行术前TNM分期,并与病理结果进行对照分析。结果:16层螺旋CT对直肠癌T分期判定的准确率为83%,对直肠癌N分期判定的准确率为76%,16层螺旋CT判断淋巴结转移的敏感性、特异性、阳性预测值及阴性预测值分别为62%、87%、73%、80%。16层螺旋CT判断肿瘤浆膜面浸润的敏感性、特异性、阳性预测值及阴性预测值分别为85%、55%、84%、58%。结论:16层螺旋CT平扫及三期增强扫描对直肠癌的术前TNM分期与病理分期有较好的一致性,具有重要的临床价值。Objective： To evaluate the virtues of preoperative 16-slice spiral CT scanning and triple-phase scanning in the diagnosis and staging of rectal carcinoma. Methods： Seventy-five rectal carcinoma tissue samples were collected from 32 women and 43 men, with average age being 57 years. Sixteen-slice spiral CT scanning and enhanced CT scanning were performed on these patients. The preoperative CT staging results of the 75 patients with rectal carcinomas were compared with pathological examination. Results： Sixteen-slice spiral CT accuracy in T-staging and N-staging of rectal carcinoma were 83% and 76%, respectively. For lymph node metastases, the sensitivity, specificity, positive predictive value and negative predictive value in 16-slice spiral CT were found to be 62%, 87%, 73%, and 80%, respectively. For serosal invasion, the sensitivity, specificity, positive predictive value and negative predictive value in 16-s,ce spiral CT were found to be 85%, 55%, 84%, and 58%, respectively. Conclusion： The 16-spiral CT scanning and MSCT Triple-phase scanning are valuble for preoperative staging of rectal carcinoma.

关 键 词：直肠癌 16层螺旋CTⅢ期增强扫描 术前分期 

分 类 号：R735.3[医药卫生—肿瘤]