MRI在直肠癌术前分期中的准确性分析

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Abstract Objective To evaluate the accuracy of preoperative MRI staging in primary rectal cancer patients. Methods From December 2012 to April 2014, in Sixth Affiliated Hospital of Sun Yat-Sen University, 154 primary rectal cancer patients underwent MRI before surgery were selected. The accuracy of preoperative MRI was analyzed by comparing with postoperative pathological stage. Results T stage was divided into T3-4 stage and T0-2 stage, the accuracy, sensitivity, specificity, PPV, NPV were 77.9%, 93.3%, 46%, 78.2%, 76.7%. N stage was divided into N+ stage and N0 stage, the accuracy, sensitivity, specificity, PPV, NPV were 57.1%, 78.2%, 45.5%, 44.3%, 78.9%. TNM stage was divided into Ⅱ-Ⅲ stage and 0-Ⅰ stage, he accuracy, sensitivity, specificity, PPV, NPV were 79.9%, 93.1%, 39.5%, 82.4%, 65.2%. Conclusion MRI can be applied as a useful tool in rectal cancer staging. Both T category and nodal metastasis has high sensitivity. But its low specificity may lead to over-staging.

Key words： Rectal cancer MRI Preoperative stage Accuracy

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	LIN Weida LUO Yanxin

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LIN Weida LUO Yanxin. Analysis of accuracy of preoperative MRI staging[J]. 中国医药导报, 2017, 14(28): 113-116.

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http://www.yiyaodaobao.com.cn/EN/ OR http://www.yiyaodaobao.com.cn/EN/Y2017/V14/I28/113

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