MSCT与MR-DWI在诊断结直肠癌区域淋巴结分期与转移中的价值

Value of MSCT and MR-DWI in the Diagnosis of Regional Lymph Node Staging and Metastasis of Colorectal Cancer

目的分析MSCT与MR-DWI在诊断结直肠癌区域淋巴结分期与转移中的价值。方法回顾性分析2016年1月至2018年12月在本院经确诊结直肠癌的106例患者的MSCT、MR-DWI影像学资料,以手术病理诊断结果为对照,分析MSCT、MR-DWI诊断结直肠癌区域淋巴结分期(N分期)、转移(M分期)的临床价值。结果MR-DWI诊断结直肠癌N分期的灵敏度、特异度、准确率均显著高于MSCT,但阳性预测值及阴性预测值显著低于MSCT(P<0.05);且MR-DWI诊断M分期的准确率显著高于MSCT(P<0.05)。结论较MSCT,MR-DWI诊断结直肠癌N分期、M分期或具更高准确率,值得临床重视。

Objective To evaluate the value of multi-slice spiral computed tomography(MSCT)and MR diffusion-weighted imaging(DWI)in the diagnosis of regional lymph node staging and metastasis of colorectal cancer.Methods 106 patients with colorectal cancer diagnosed by surgical pathology in the hospital from January 2016 to December 2018 were included in the study.The imaging data of MSCT and MR-DWI were retrospectively analyzed,and the results of surgical pathology were taken as controls to analyze the clinical value of diagnosis of regional lymph node staging(N stage)and metastasis(M stage)of colorectal cancer.Results The sensitivity,specificity and accuracy rate of MR-DWI in the diagnosis of colorectal cancer N stage were significantly higher than those of MSCT while the positive predictive value and negative predictive value were significantly lower than those of MSCT(P<0.05).The accuracy rate of MR-DWI in the diagnosis of M stage(76.41%vs 88.68%)was significantly higher than that of MSCT(P<0.05).Conclusion Compared with MSCT,MR-DWI has higher accuracy rate in the diagnosis of N stage and M stage of colorectal cancer,and it is worthy of clinical attention.