3.0T MRI检查对直肠癌盆腔淋巴结转移及N分期的诊断价值  

Diagnostic value of 3.0T MRI in pelvic lymph node metastasis and N stage of rectal cancer

作　　者：周伟 李锋 洪欣[1] ZHOU Wei;LI Feng;HONG Xin(Department of Imaging,the First People’s Hospital of Fuzhou,Fuzhou 344100,Jiangxi,China)

机构地区：[1]抚州市第一人民医院影像科,江西抚州3441000

出　　处：《癌症进展》2024年第22期2472-2474,2478,共4页Oncology Progress

摘　　要：目的探讨3.0T MRI检查对直肠癌盆腔淋巴结转移(PLNM)及N分期的诊断价值。方法选取50例经病理检查确诊的直肠癌患者,全部患者均在术前行3.0T MRI检查。以病理检查结果为金标准,分析MRI检查对直肠癌PLNM和N分期的诊断价值。结果50例患者中,经病理检查确诊发生PLNM 22例为PLNM组,未发生PLNM 28例为非PLNM组。3.0T MRI检查诊断直肠癌PLNM的准确度为88.00%(44/50),特异度为89.29%(25/28),灵敏度为86.36%(19/22),与病理检查结果的一致性较高(Kappa=0.756)。PLNM组患者淋巴结短径明显大于非PLNM组,边缘模糊率和信号不均匀率均明显高于非PLNM组,差异均有统计学意义(P﹤0.01)。3.0T MRI检查对N1、N2期直肠癌的诊断符合率分别为84.62%、88.89%。结论3.0T MRI检查在诊断直肠癌PLNM、N分期中具有一定的应用价值,诊断效能较高,且其MRI征象多表现为淋巴结短径增大、边缘模糊、信号不均匀。Objective To evaluate the diagnostic value of 3.0T MRI in pelvic lymph node metastasis(PLNM)and N stage of rectal cancer.Method A total of 50 patients with rectal cancer diagnosed by pathological examination were se-lected.All patients underwent 3.0T MRI examination before surgery.The diagnosis value of MRI in the PLNM and N stage of rectal cancer were analyzed with pathological examination as the gold standard.Result Among the 50 patients,22 cases with PLNM confirmed by pathological examination were included in the PLNM group,while 28 cases without PLNM were included in the non-PLNM group.The accuracy of 3.0T MRI in the diagnosis of PLNM for rectal cancer was 88.00%(44/50),the specificity was 89.29%(25/28),and the sensitivity was 86.36%(19/22),which showed high con-sistency with the pathological examination results(Kappa=0.756,P<0.05).The lymph node short diameter in PLNM group was significantly larger than that in non-PLNM group,the edge blur rate and signal ununiformity rate were signifi-cantly higher than those in non-PLNM group,and the differences were statistically significant(P<0.01).The diagnosis co-incidence rate of N1 and N2 stage of rectal cancer with 3.0T MRI were 84.62%and 88.89%,respectively.Conclusion 3.0T MRI has a certain application value in the diagnosis of PLNM and N stages of rectal cancer,the diagnostic efficien-cy is high,and the MRI signs were mainly enlarged lymph node short diameter,blurred edge and uneven signal.

关 键 词：直肠癌 盆腔淋巴结转移 3.0T MRI 诊断价值 

分 类 号：R735.37[医药卫生—肿瘤]