Ⅰb期非小细胞肺癌患者手术预后因素分析

目的研究影响Ⅰb期非小细胞肺癌（NSCLC）患者手术预后的临床病理学特征,探讨术后辅助化疗的选择指征。方法收集2002年1~12月在上海市胸科医院接受完全性肺叶切除并术后病理证实为Ⅰb期非小细胞肺癌患者152例的临床资料,其中男82例,女70例;年龄33~80岁,平均年龄63.0岁。采用Kaplan-Meier方法对患者年龄、性别、肿瘤直径、肿瘤部位、淋巴管或血管内癌栓、分化程度、胸膜侵犯、辅助化疗等进行比较分析,依据Cox回归模型对上述因素进行预后多因素分析。结果152例患者的5年生存率为71.1%,中位生存时间为44.20个月。单因素分析结果显示：肿瘤直径〉5 cm（χ2=4.020,P=0.042）,有淋巴管或血管内癌栓（χ2=14.670,P=0.001）,低分化肿瘤（χ2=8.395,P=0.004）、肿瘤位于中下叶（χ2=3.980,P=0.045）者预后较差;患者的年龄（χ2=0.478,P=0.740）,性别（χ2=0.571,P=0.450）,病理类型（χ2=0.406,P=0.816）,肿瘤侵犯胸膜（χ2=0.022,P=0.882）,术后辅助化疗（χ2=1.067,P=0.302）与术后生存无关;多因素分析结果显示：淋巴管或血管内癌栓（P=0.006,95%CI：1.491,10.524）和肿瘤低分化（P=0.001,95%CI：0.116,0.578）是影响患者生存率的主要因素。结论Ⅰb期非小细胞肺癌患者肿瘤细胞分化程度及淋巴管或血管内癌栓是影响手术预后和生存率的重要因素,低分化肿瘤和淋巴管或血管内癌栓可作为术后辅助化疗的指征之一。

Analysis of Prognostic Factors for Patients with Stage Ib Non-small Cell Lung Cancer after Operation

Objective To study the clinicopathologic features which influence the prognosis of patients with stage Ib non-small cell 1Ling cancer （NSCLC） after operation, and discuss the indication of postoperative chemotherapy. Methods From January 2002 to December 2002, the clinical materials of 152 patients who underwent complete pulmonary lobectomy and were confirmed to have stage Ib NSCLC by postoperative histopathological examination were collected from Shanghai Chest Hospital. There were 82 male and 70 female cases aged from 33-80 years. The mean age was 63.0 years. Kaplan Meier method was used to compare and analyze the age, gender, tumor diameter, tumor location, lymphatic or vascular carcinoma embolus, differentiation, pleural invasion and chemotherapy of patients. Cox regression model was used to do prognostic multivariate analysis to above factors. Results The 5-year survival rate was 71.1%. The median survival time was 44.20 months. The results of single factor analysis showed that the tumor diameter was longer than 5 cm（7,2 = 4. 020, P--0. 042）, lymphatic or vascular carcinoma embolus existed（x2 = 14. 670, P=0. 001）, poorly differentiated tumor（X2= 8. 395,P= 0. 004）, and those whose tumors were located on middle lower lobars hada poor prognosis（X2 3. 980,P=0. 045）. The age（X2=0.478,P=0.740）, gender（X2=0.571,P= 0.450）, pathological type（z2 -- 0.406,P= 0.816）, pleural invasion（X2= 0.022, P= 0.882） and postoperative chemotherapy of patients （X2= 1. 067, P= 0. 302）had no relationship with postoperative survival. The results of multivariate analysis showed that lymphatic or vascular carcinoma embolus（P= 0. 006,95%CI： 1. 491,10. 524） and poorly differentiated tumor（P= 0.001,95 % CI：0. 116,0. 578） were the main factors which influenced the survival rate of patients. Conclusion The tumor differentiation and lymphatic or vessel carcinoma embolus of patients with stage Ib NSCLC are important factors which influence prognosis and survival rate. The poorly differentiated