CT和MRI对直肠癌术前T、N分期的对比研究  

Diagnosis values of CT and MRI scans on preoperative T and N stagings of rectal carcinoma

作　　者：杨仁保[1] 李良[1] 张军[1] 李文波[1] 鲁俊[1] YANG Renbao;LI Liang;ZHANG Jun;LI Wenbo;LU Jun(Department of General Surgery, Hefei Second People＇s Hospital, Hefei 230001, P. R. China)

机构地区：[1]合肥市第二人民医院普外科,合肥230001

出　　处：《中国普外基础与临床杂志》2018年第4期433-437,共5页Chinese Journal of Bases and Clinics In General Surgery

摘　　要：目的比较螺旋CT与磁共振成像(MRI)对直肠癌术前T、N分期判断的价值。方法回顾性分析2013年1月至2017年1月期间合肥市第二人民医院普外科收治并行手术治疗的81例直肠癌患者的影像学资料,81例患者均行了CT检查,其中63例患者同时行了MRI检查,以术后病理检查结果为金标准,比较CT和MRI对判断直肠癌T分期和N分期的准确性。结果 CT和MRI判断直肠癌术前T分期的灵敏度分别为69.1%(56/81)和82.5%(52/63),二者比较差异无统计学意义(χ~2=3.396,P=0.065);其Kappa值分别为0.521和0.720,提示CT判断T分期与病理诊断一致性一般而MRI判断T分期与病理诊断一致性较好。CT判断T1-2、T3及T4期的灵敏度分别为70.0%、66.7%和72.0%,MRI判断T1-2、T3及T4期的灵敏度分别为83.3%、83.3%和81.0%,二者分别比较差异均无统计学意义(P>0.05)。CT和MRI判断T1-2、T3和T4期的受试者操作特征曲线下面积分别为0.809、0.689和0.798以及0.897、0.826和0.869。CT和MRI判断直肠癌术前N分期的灵敏度分别为59.3%(48/81)和65.1%(41/63),二者比较差异无统计学意义(χ~2=0.509,P=0.476);其Kappa值分别为0.371和0.463,CT和MRI判断N分期与病理诊断一致性均一般。CT判断N0、N1和N2期的灵敏度分别为64.7%、45.5%和64.0%,MRI判断N0、N1和N2期的灵敏度分别为70.3%、63.2%和72.5%,二者分别比较差异均无统计学意义(P>0.05)。结论 MRI判断直肠癌肿瘤浸润深度优于CT,二者对淋巴结转移的判断准确度均不高。Objective To compare diagnosis values of computed tomography （CT） and magnetic resonance imaging （MRI） in preoperative staging of rectal carcinoma. Methods The imaging data of 81 patients with rectal carcinoma from January 2013 to January 2017 in the Hefei Second People’s Hospital were retrospectively analyzed. Based on the postoperative pathological results, the diagnostic accordance rates of CT and MRI on the T staging and N staging were calculated. Results The sensitivities of the CT and MRI on the preoperative T staging of rectal carcinoma were 69.1% （56/81） and 82.5% （52/63）, the difference was not statistically significant （χ2=3.396, P=0.065）, the Kappa values was 0.521 and 0.371, respectively, the MRI on the T staging was in a good agreement with the pathological diagnosis. The sensitivitie of the T1-2, T3, and T4 stagings with CT was 70.0%, 66.7%, and 72.0%, respectively, with MRI was 83.3%, 83.3%, and 81.0%, respectively, which had no significant difference respectively between the CT and the MRI. The areas under the receiver operating characteristic curve of the T1-2, T3, and T4 stagings with the CT and MRI were 0.809, 0.689, 0.798 and 0.897, 0.826, 0.869, respectively. The sensitivities of the CT and MRI on the preoperative N staging of rectal carcinoma were 59.3% （48/81） and 65.1% （41/63）, the difference was not statistically significant （χ2=0.509, P=0.476）, the Kappa values were 0.371 and 0.463, respectively. The sensitivities of the N0, N1, N2 stagings with CT were 64.7%, 45.5%, 64.0%, with MRI were 70.3%, 63.2%, 72.5%, which had no significant difference respectively between the CT and the MRI. Conclusions Results of in this study show that MRI is superior to CT for judgment of tumor infiltration. Neither CT nor MRI is able to provide satisfactory assessment of lymph node metastasis.

关 键 词：直肠癌 术前分期 螺旋CT 磁共振成像 

分 类 号：R735.37[医药卫生—肿瘤]