脏层胸膜浸润对术后早期非小细胞肺癌预后的影响.doc
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1、前 言肺癌是世界上发病率和死亡率最高的恶性肿瘤之一,在我国居各种恶性肿瘤之首位。男性发病率高于女性,其比约为2.3:1,多在40岁以上发病。根治性手术是早期肺癌患者首选的治疗方法。20世纪70年代中期开始VPI作为独立危险因素在肺癌TNM分期中出现。国际肺癌研究协会(International association for the study of lung cancer, IASLC)第七版TNM分期在T分期中定义:不论肿瘤直径大小,只要存在脏层胸膜受累即为T2期。推荐肿瘤直径3cm(T1a和T1b)有脏层胸膜受累升级为T2a,而肿瘤直径为35cm(T2a)的患者有VPI仍保持为T2a目前
2、存在争议。目前国内尚缺少报道探究VPI 对早期(III期)NSCLC患者预后的影响。本研究回顾性分析261例在我院接受根治性手术的III期NSCLC患者,探究VPI对其预后的影响。中文摘要脏层胸膜浸润对术后早期非小细胞肺癌预后的影响背景:肺癌居我国恶性肿瘤发病率第一位,男性发病率高于女性,多在40岁以上发病,男女患病比为2.3:1。根治性手术是公认的肺癌患者首选治疗方法。20世纪70年代中期开始脏层胸膜浸润作为独立危险因素在肺癌TNM分期中出现。国际肺癌研究协会(International association for the study of lung cancer, IASLC)第七版T
3、NM分期在T分期中定义:不论肿瘤直径大小,只要存在脏层胸膜受累即为T2期。推荐肿瘤直径3cm(T1a和T1b)有脏层胸膜受累升级为T2a,而肿瘤直径为35cm(T2a)的患者有VPI仍保持为T2a目前存在争议。目前国内尚无报道探究VPI 对早期(III期)NSCLC患者预后的影响。本研究回顾性分析261例在我院接受根治性手术的III期NSCLC患者,探究VPI对其预后的影响。 目的:研究术后早期非小细胞肺癌(NSCLC)患者的脏层胸膜浸润(VPI)情况,阐明VPI对NSCLC预后的影响。方法:门诊随访2007-2011年本院经外科根治性术后病理分期为I-II期NSCLC的患者261例,中位随访
4、时间36个月,将患者分为有VPI组和无VPI组,VPI组患者130例,无VPI组131例,采用X2检验或Fisher精确概率法进行分类变量分析,Kaplan-Meier法估算无疾病生存率和总生存率,单因素、多因素分析采用COX比例风险模型。结果:1、VPI组患者1年总生存率为90.77%,无VPI组为93.13%,两组比较差异无统计学意义(P 0.05)。VPI患者组3及5年总生存率(69.23%和63.85%)低于无VPI组(80.15%和74.05%),两者比较差异有统计学意义(P 0.05)。2、VPI对T2a期患者的DFS有影响(P = 0.024),而对其他患者(无论肿瘤直径大小)的
5、DFS均无影响(均P 0.05)。3、T2a期伴VPI患者的DFS与T2b期患者(无论有无VPI)无明显差异(P分别为 0.410与0.195)。4、VPI对T1b患者的OS有影响(P = 0.024),而对其他患者(无论肿瘤直径大小)的OS均无影响(均P 0.05)。5、T1b患者伴VPI者OS与T2a期患者(无论有无VPI)无明显差异(P分别为 0.196与0.139)。6、单因素及多因素分析均提示VPI对DFS和OS有明显相关性(P 0.05)。 结论:1、 VPI是术后早期肺癌不良预后因素之一,对临床病理分期标准有影响作用。2、 T1b期(肿瘤直径3厘米)患者伴VPI升级为T2a。3、
6、 T2a期(肿瘤直径35厘米)伴有VPI患者应升级为T2b。关键词:非小细胞肺癌;脏层胸膜浸润;预后;总生存率;无疾病生存率AbstractInfluence of visceral pleural invasion in prognosis of early postoperative non-small cell lung cancerBackground:Lung cancer is the most common cancer with the highest mortality worldwide. In China, lung cancer has outnumbered live
7、r cancer and become the leading cause of death among patients with malignant tumors since 2008. Jeopardized by smoking and environmental pollutions, China has witnessed a 4.6-fold increase in lung cancer mortality over the past three decades. Lung cancer shows a higher incidence in males than in fem
8、ales, with an approximate ratio of 2.3 to 1, and mostly occurs in people of 40 years or older. Of the two main types of lung cancer, i.e., non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC), NSCLC account for approximately 85%. For those with early-stage NSCLC, radical resection is
9、 the first-choice treatment. However, due to varied prognosis observed in patients even after radical resection, it is important to identify important prognostic factors for lung cancer, based on which, proper adjuvant or no-adjuvant therapy may be selected to further improve the patients survival.F
10、or surgically managed NSCLC, the pathologic tumor, lymph node and metastasis (TNM) staging system is the most important prognostic factor. Within the TNM system, visceral pleural invasion (VPI) has proven itself as an independent poor prognostic factor over the past 25 years. Based on the seventh ed
11、ition of the TNM staging system for lung cancer by International Union Against Cancer (UICC) and American Joint Committee on Cancer (AJCC), VPI is defined as “invasion beyond the elastic layer (PL1) including invasion to the visceral pleural surface (PL2)”. Tumors with VPI, regardless of its size, a
12、chieve a T2 status. However, it is still under debate whether a tumor with a size in between 3-5 cm and positive for VPI should be upgraded from T2a to T2b. In addition, the significance of VPI in the prognosis of early-stage NSCLC has not been systematically reviewed in China. In this study, we fol
13、lowed the definitions by the seventh edition of TNM classification, and retrospectively analyzed the impact of VPI on the prognosis of 261 Chinese patients with early-stage NSCLC (pathological stage I to II).Objective: To investigate the impact of visceral pleural invasion (VPI) on the post-operativ
14、e prognosis of patients with early-stage non-small cell lung cancer (NSCLC).Methods: Between Nov. 2007 and Nov. 2011, 261 patients with pathological stage I to II NSCLC underwent radical resection in the First Affiliated Hospital of Jilin University. The median follow-up time was 36 months . All the
15、 patients were divided into VPI group and non-VPI group . There were 130 cases in VPI group and 131 cases in non-VPI group . The associations between VPI and prognosis of these patients were analyzed.X2 test or fishers exact test was used to analyze the categorical variables. Kaplan-Meier method was
16、 used to estimate disease-free survival(DFS)and overall survival(OS).COX proprotional hazards model was used for the univariate and multivariate analyses. Results: 1、The one-year overall survival (OS) for patients with and without VPI was 90.77% and 93.13%, respectively, with no statistical differen
17、ce (P = 0.075); the three-year and five-year OS for these patients was 69.23% versus 80.15%, and 63.85% versus 74.05%, respectively, showing statistical significance (P = 0.040 and 0.049, respectively). 2、VPI positivity has significantly negative impact on the five-year disease-free survival (DFS) o
18、f patients with T2a NSCLC without lymph node metastasis (P = 0.024), but not on those with NSCLC of other sizes (P 0.05). 3、There was no significant difference between pathologic stage T2a VPI patients DFS and T2b patients DFS (regardless VPI, P = 0.410, P = 0.195).The DFS for VPI patients with T2a
19、NSCLC did not differ significantly from those with T2b NSCLC (regardless of their VPI status). 4、 Among all 261 patients examined, VPI significantly impacts the OS of only those with T1b NSCLC (P = 0.024). 5、 VPI patients with T1b NSCLC showed similar OS as those with T2a NSCLC (regardless of their
20、VPI status). 6、Univariate and multivariate analyses both revealed VPI as an independent prognostic factor for OS and DFS.Conclusion: VPI is an independent poor prognostic factor for patients with early-stage NSCLC. In NSCLC, T1b with VPI should be treated with the same surgical strategy as T2a, whil
21、e T2a with VPI should be treated as for T2b.Key words: Non-small cell lung cancer ;visceral pleural invasion ; prognosis ; overall survival ; disease-free survival 第1章 绪 论肺癌是世界上发病率和死亡率最高的恶性肿瘤之一,在我国居各种恶性肿瘤之首位。男性发病率高于女性,其比约为2.3:1,多在40岁以上发病。根治性手术是早期肺癌患者首选的治疗方法。20世纪70年代中期开始VPI作为独立危险因素在肺癌TNM分期中出现。国际肺癌研究协
22、会(International association for the study of lung cancer, IASLC)第七版TNM分期在T分期中定义:不论肿瘤直径大小,只要存在脏层胸膜受累即为T2期。推荐肿瘤直径3cm(T1a和T1b)有脏层胸膜受累升级为T2a,而肿瘤直径为35cm(T2a)的患者有VPI仍保持为T2a目前存在争议 。目前国内尚缺少报道探究VPI 对早期(III期)NSCLC患者预后的影响。本研究回顾性分析261例在本院接受根治性手术的I-II期NSCLC患者,阐明VPI对其预后的影响,对肿瘤的分期具有指导意义。根据IASLC肺和胸膜肿瘤第七版TNM分期对VPI进行
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- 关 键 词:
- 胸膜 浸润 术后 早期 细胞 肺癌 预后 影响
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