MRI与CT在结肠直肠癌术前诊断与分期中的应用价值

Value of MRI and CT in preoperative diagnosis and staging of colorectal cancer

目的探讨MRI与CT在结肠直肠癌术前诊断与分期中的应用价值。方法收集本院收治的40例经结直肠镜以及病理检查确诊的结肠直肠癌患者,均进行MRI扫描和CT扫描,并与手术病理分期结果进行比较,分析2种检查在术前分期诊断中的准确性。结果 MRI检查在≤T2以及T3分期中的诊断准确率显著高于CT检查(P<0.05);MRI对T4分期诊断准确率与CT比较无显著差异(P>0.05)。在直结肠癌淋巴结转移判断中,MRI检查准确率75.0%,CT检查准确率62.5%,差异无统计学意义(P>0.05)。结论 MRI较CT有更高的准确率,联合以上2种诊断方法在结肠直肠癌临床诊断、手术前分期诊断以及指导治疗中具有十分重要的意义。

Objective To investigate the value of MRI and CT in preoperative diagnosis and staging of colorectal cancer. Methods A total of 40 patients with colorectal cancer confirmed by colorectal colonoscopy and pathological examination were conducted with MRI scan and CT scan. The results of MRI and CT were compared to surgical pathological staging, and the accuracy of MRI and CT was compared in preoperative staging diagnosis. Results The accuracy of MRI in diagnosing staging ≤T 2 and T 3 was significantly higher than that of CT （ P 〈0.05）. There was no significant difference in the accuracy of T4 staging between MRI and CT （ P 〉0.05）. In the diagnosis of lymph node metastasis of colorectal cancer, the accuracy of MRI and CT was 75% and 62.5% respectively, and there was no significant difference between two methods （ P 〉0.05）. Conclusion The accuracy of MRI is higher than that of CT. The combination of two diagnostic methods is of great significance in clinical diagnosis, preoperative staging diagnosis and treatment of colorectal cancer.