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中华结直肠疾病电子杂志 ›› 2014, Vol. 03 ›› Issue (05) : 348 -355. doi: 10.3877/cma.j.issn.2095-3224.2014.05.09

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论著

术前应用MRI评估直肠癌T分期的价值
崔书发1, 王锡山1,()   
  1. 1. 150086 哈尔滨医科大学附属第二医院结直肠肿瘤外科 哈尔滨医科大学大肠癌研究所
  • 收稿日期:2014-07-28 出版日期:2014-10-25
  • 通信作者: 王锡山
  • 基金资助:
    国家自然科学基金(81272706)

The accuracy of MRI in preoperative T staging diagnosis of rectal cancer

Shu-fa CUI1, Xi-shan WANG1,()   

  1. 1. Department of Colorectal Cancer Surery, the Second Hospital of Harbin Medical University, the Colorectal Cancer Institute of the Harbin Medical University, Harbin 10086, China
  • Received:2014-07-28 Published:2014-10-25
  • Corresponding author: Xi-shan WANG
  • About author:
    Corresponding author: WANG Xi-shan, Email:
引用本文:

崔书发, 王锡山. 术前应用MRI评估直肠癌T分期的价值[J/OL]. 中华结直肠疾病电子杂志, 2014, 03(05): 348-355.

Shu-fa CUI, Xi-shan WANG. The accuracy of MRI in preoperative T staging diagnosis of rectal cancer[J/OL]. Chinese Journal of Colorectal Diseases(Electronic Edition), 2014, 03(05): 348-355.

目的

探讨影响MRI术前评价直肠癌T分期的准确性的相关因素,比较不同影响因素对MRI术前评价直肠癌T分期的准确性的影响。

方法

回顾性分析哈尔滨医科大学附属第二医院结直肠肿瘤外科2011年8月至2014年4月收治入院的60例患者,所选取的病例术前均行盆腔MRI检查且术后病理证实为直肠癌,实施手术方式为直肠癌扩大根治术(AR)或直肠癌腹会阴联合切除术(APR),不伴有多发癌、同时性癌及异时性癌,病例资料完善,比较术前MRI评价直肠癌T分期与病理T分期的一致性及MRI判定的准确性。并进行相关影响因素的分析。对1例离体直肠标本行MRI扫描,将其影像结果与术前MRI进行对比。

结果

术前MRI诊断直肠癌T分期中,总例数为60例,诊断与病理T分期一致的例数为52例,总体准确率为86.67%。对纳入的影响MRI术前评价直肠癌T分期的准确性的相关因素,进行单因素分析显示,BMI和肿瘤最大直径有统计学意义(P<0.0001),直肠系膜浸润程度(D1/D0)、年龄、肿瘤分化程度、肿瘤距离肛缘的距离、术前CEA、CA199、性别、病理回报的神经侵犯、血管瘤栓、淋巴管瘤栓、淋巴结转移数目、术前贫血、手术方式无统计学意义(P>0.05),进行多元logistic逐步回归分析,BMI的P值为0.0012,有统计学意义;肿瘤最大直径的P值为0.0981,无统计学意义。统计分析BMI和D1/D0的P值,P值为0.5509,无统计学意义。离体直肠1例标本进行MRI扫描与术前MRI影像吻合。

结论

术前MRI评价直肠癌T分期的诊断准确率高,一致性强,应用价值高。BMI越小,术前MRI评价直肠癌T分期的诊断准确率可能越高。

Objective

To evaluate the accuracy of MRI in preoperative T staging of rectal cancer.

Methods

60 cases in our department from August 2011 to April 2014 which were treated by AP or APR were enrolled.The rectal cancer should be primary and single.The T staging by MRI and pathology were compared.Analyse the correlative factors and take a sample for MRI scan.

Results

Twelve of the 14 cases of T1-2 staging are confounding consistent with the pathologic results.For 6 T3 stage cases, MRI results of 4 cases are consistent with pathologic staging.There are 40 cases of T4 stage and all of them are cansistent with the pathologic result.The total accuracy of MRI is 86.67%.Single factor analysis revealed that BMI and the maximum diameter of the tumor could influence the accuracy of MRI.

Conclusion

There is no statistically difference between T staging by MRI and pathology.BMI could affect the accuracy of T-staging.

表1 应用MRI检查在术前诊断直肠癌T分期与术后病理T分期的对比情况表
表2 MRI检查的影响因素分析详细情况表
表3 患者BMI值和肿瘤最大直径统计分析表
表4 患者BMI值和D1/D0情况分析表
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