18F-FDG PET-CT对周围型肺腺癌淋巴结转移的相关性研究

摘要

目的 非小细胞肺癌(NSCLC)淋巴结分期是影响患者治疗方案选择的重要因素之一,但目前临床所使用的分期方法存在其局限性.文中基于胸部CT及PET/CT显像,分析周围型肺腺癌淋巴结转移的危险因素,以期获得更准确的术前淋巴结分期. 方法 回顾性分析2010 年 2月至 2015 年11月期间于南京总医院接受手术治疗的肺腺癌患者248例.所有患者均行胸部CT检查,其中80例行接受PET/CT检查.采用单因素分析淋巴结转移与性别、年龄、吸烟状况、血癌胚抗原(CEA)、原发灶最大标准摄取值(SUVmax),肿瘤大小、病理亚型及分化程度之间的关系;采用多因素Logistic回归分析淋巴结转移的危险预测因素. 结果 248例肺腺癌患者中,74例(29.8%)出现区域淋巴结转移.单因素分析得出淋巴结转移与血CEA、分化程度、肺癌原发灶的SUVmax大小、肿瘤大小、分叶/毛刺征、胸膜凹陷征、纵膈或肺门淋巴结肿大有关(P<0.05);与年龄、性别、吸烟状、表皮生长因子受体(EGFR)突变状态、病理类型、支气管充气征及血管集束征等无关(P>0.05).多因素Logistic回归分析显示原发灶SUVmax、血CEA水平、纵膈或肺门淋巴结肿大、空洞或空泡征及胸膜凹陷征是淋巴结转移的独立危险因素. 结论 综合使用影像学指标及血CEA有助于更准确地判断周围型肺腺癌患者出现淋巴结转移的风险;对于淋巴结转移需考虑原发灶SUVmax、血CEA水平、纵膈或肺门淋巴结肿大、空洞或空泡征及胸膜凹陷征等因素.%Objective Classification of non-small cell lung lymph (NSCLC) node (N) is one of the key factors influencing treatment, however, the cilinical noninvasive and invasive approaches to N classification have their limitations.This study aimed to investigate the risk factors of lymph node metastasis of peripheral lungadenocarcinoma by using CT and PET / CT scans.Methods Retrospective analysis had been done on a total of 248 patients who underwent surgical resection from February 2010 to November 2015 in our hospital.All of them underwent chest CT and 80 patients underwent PET/CT examination.Univariate analysis was applied in the relation of lymph node metastasis to gender, age, smoking situation, CEA, SUV, cancer size, pathological variants, and the degree of differentiation.Multivariable logistic regression analysiss were performed in the prediction of risk factors for lymph node metastasis.ResultsSeventy-four patients (29.8%) had regional lymph node metastases.Univariate analysis showed that lymph node metastasis was related to the serum CEA level, degree of differentiation, SUVmax, tumor size, lobulation/spiculation, pleural retraction, mediastinal or hilar lymphadenopathy (P<0.05).In the multivariable analysis of risk factors, including serum CEA, SUVmax and CT features, for predicting lymph node metastasis, the most important and significantly independent risk factors identified were SUVmax, CEA level, mediastinal or hilar lymphadenopathy, cavitation/bubble-likelucency and pleural retraction (P<0.05).Conclusion The lymph node metastasis is associated with SUVmax of primary tumor, serum CEA level, mediastinal or hilar lymphadenopathy, cavitation/bubble-likelucency and pleural retraction.The combination of radiographic features and serum CEA can help to predict more accurately the risk of lymph node metastasis in patients with peripheral lung adenocarcinoma.