摘要
目的评价磁共振成像(MRI)诊断在直肠癌术前局部分期中的价值。方法 67例直肠癌患者术前行MRI检查,将术前分期与术后病理分期结果对比,观察MRI对直肠肿瘤浸润深度(T分期)、区域淋巴结转移(N分期)判断的准确性。结果 MRI对术前患者T分期的准确度为83.6%(56/67),直肠癌患者MRI T分期与病理分期结果的一致性检验kappa值为0.79,有统计学意义(u=69.64,P<0.01);kappa值95%CI为(0.82,0.77)。MRI对患者N分期的准确度为68.7%(46/67),MRI判断淋巴结转移的特异度为71.0%(22/31),敏感度为66.7%(24/36)。结论 MRI对直肠癌术前患者分期有重要价值,尤其对判断直肠外膜有无侵犯及远处转移的准确性较好,但对淋巴结转移的判断存在一定的局限性。
Objective To evaluate magnetic resonance imaging（MRI） in the preoperative local staging of rectal carcinomas.Methods MRI was performed prior to surgery in 67 patients with rectal carcinoma to assess its value in staging the tumor,and then compare it with Postoperative Pathological Stage.Results The overall accuracy of preoperative T Stage with MRI was 83.6%.There were no obvious difference between the result of preoperative T Stage with MRI and Postoperative Patho-logical T Stage（kappa = 0.79,P 0.01）.The accuracy of N Stage with MRI was 68.7%.MRI scans had specificities and sensitivities of 71.0%（22 /31） and 66.7%（24 /36） respectively in detecting lymph node metastases.Conclusion MRI is useful for preoperative staging of rectal carcinomas,especially for the detection of external membrane infiltration and distant me-tastasis,but it has limitations in judging the status of lymph node.
出处
《中国全科医学》
CAS
CSCD
北大核心
2010年第33期3725-3728,共4页
Chinese General Practice
基金
浙江省自然科学基金(Y207427)
关键词
直肠肿瘤
肿瘤分期
磁共振成像
Rectal neoplasms
Neoplasms staging
Magnetic resonance imaging
