中华医学会肺癌临床诊疗指南(2022版)

中华医学会肿瘤学分会 中华医学会杂志社

本文同时发表在《中华肿瘤杂志》2022年第44卷第6期481-514页

韩宝惠,Email:hanxkyy@aliyun.com

引用本文:中华医学会肿瘤学分会, 中华医学会杂志社. 中华医学会肺癌临床诊疗指南(2022版)[J]. 中华医学杂志, 2022, 102(23): 1706-1740. DOI: 10.3760/cma.j.cn112137-20220413-00795.

原发性支气管肺癌简称肺癌,是我国及世界各国发病率和死亡率较高的恶性肿瘤之一1。近年来中国肺癌的发病率和死亡率呈明显上升趋势,据我国国家癌症中心统计,2016年我国肺癌发病率和死亡率均居恶性肿瘤首位,其中新发病例约82.8万,死亡病例约65.7万;男性高于女性,城市高于农村;发病率和死亡率存在区域差异,东北部最高,其次为西南部、中部、东部、北部、南部,西北部最低2, 3。早期肺癌多无明显症状,临床上多数患者出现症状就诊时已属晚期,晚期肺癌患者整体5年生存率不高。

为进一步规范我国肺癌防治措施、提高肺癌诊疗水平、改善患者预后、为各级临床医师提供专业的循证医学建议,中华医学会肿瘤学分会组织呼吸内科、肿瘤内科、胸外科、放疗科、影像科和病理科专家,结合国际指南和中国国情,整合近年来肺癌病理、基因检测、免疫分子标志物检测和治疗手段等方面的新进展,制定了中华医学会肺癌临床诊疗指南(2022版),旨在为各级临床医师提供肺癌筛查、诊断、病理、治疗和随访等方面的循证医学证据和指导性建议。本指南根据循证医学级别进行了分类推荐(表1)。

10.3760/cma.j.cn112137-20220413-00795.T001

中华医学会肿瘤学分会肺癌临床诊疗指南循证医学推荐级别

推荐类别 循证医学证据级别
1类推荐证据 级别最高,专家组一致推荐
2A类推荐证据 级别稍低,专家组一致推荐
2B类推荐证据 级别低,部分专家推荐
3类推荐证据 专家分歧较大
第一部分:肺癌的筛查

多年来国内外一直致力于通过筛查来实现肺癌的早诊早治,并最终降低肺癌相关死亡率。2011年美国国家肺癌筛查试验的随机对照研究结果显示,与X线摄影相比,采用低剂量螺旋CT(low-dose computed tomography,LDCT)对肺癌高危人群进行筛查可使肺癌死亡率下降20%4。欧美多家权威医学组织的肺癌筛查指南均推荐在高危人群中采用LDCT进行肺癌筛查5, 6, 7。近年来,我国越来越多的医疗机构已开展或拟开展LDCT肺癌筛查,但国内对LDCT肺癌筛查的认识和诊疗水平存在较大差异,临床实践不规范。目前国内医疗机构多根据国外已较成熟的方案来开展LDCT肺癌筛查工作,但与西方国家相比,我国的肺癌发病危险因素更为复杂,除吸烟外,在二手烟、环境油烟等综合因素的影响下,我国女性非吸烟人群发生肺癌的比例远高于西方人群8,因此,在肺癌筛查的具体实践中必须考虑到东西方差异。基于我国的肺癌筛查实践和既往的国内外筛查指南,本指南制定了如下参考意见。

一、筛查人群的选择 (一)年龄段(2A类推荐证据)

本指南推荐在≥45岁人群中开展肺癌筛查。2015年全国肿瘤统计数据显示,肺癌的年龄别发病率及死亡率在45岁之后显著增加9,因此,推荐肺癌筛查的起始年龄为45岁。

(二)肺癌的危险因素(2A类推荐证据)

肺癌筛查的获益随着肺癌发病风险的增加而增加,对高危人群进行筛查是目前国内外专家的共识。本指南对于高危人群的选择充分考虑了除年龄外的肺癌危险因素,结合中国肺癌的发病特点,推荐在符合年龄段的基础上,含有下列危险因素之一的人群进行肺癌筛查。

1.吸烟:吸烟可显著增加肺癌的发病风险。有研究显示,吸烟人群的肺癌发病及死亡风险高于不吸烟人群,既往吸烟人群的肺癌发病和死亡风险亦显著升高10,同时,吸烟剂量和肺癌发病风险呈线性正相关趋势11。起始吸烟年龄越小、每日吸烟量越大、持续时间越长引发肺癌的相对危险度越大。建议吸烟量≥20包年的人群进行肺癌筛查。吸烟与鳞状细胞癌和小细胞肺癌(small cell lung cancer,SCLC)的关系相对更为密切12,鳞状细胞癌和SCLC常呈中央型生长,因此,重度吸烟人群可进一步进行荧光支气管镜筛查。同时开展戒烟宣传教育。

2.二手烟或环境油烟吸入史:亚洲人群中非吸烟女性的肺癌发生率显著高于欧美人群,推测可能与二手烟暴露和厨房等场所的环境油烟暴露有关。Meta分析显示,二手烟暴露显著增加肺癌发生风险13。炒炸等烹饪方式产生的厨房油烟可导致DNA损伤或癌变,是中国非吸烟女性罹患肺癌的重要危险因素之一14, 15, 16

3.职业致癌物质暴露史:长期接触氡17、砷18、铍19、铬20、镉21及其化合物等高致癌物质者更易罹患肺癌。石棉暴露可显著增加肺癌的发病风险22。另外,二氧化硅23 和煤烟24 也是明确的肺癌致癌物。

4.个人肿瘤史:既往罹患其他恶性肿瘤者可能携带异常基因突变,基因突变可增加肺癌的发病风险25。对于肺癌基因筛查的研究仍在进行中26

5.直系亲属肺癌家族史:一级亲属被诊断为肺癌的个体患肺癌的风险明显升高27。有肺癌家族史的人群可能存在可遗传的肺癌易感位点28

6.慢性肺部疾病史:慢性阻塞性肺疾病29、肺结核30和肺纤维化31等慢性肺部疾病患者肺癌发病率高于健康人群。支气管肺组织的慢性炎症及其在愈合过程中的鳞状上皮化生或增生可能发展成肺癌32

二、筛查技术 (一)LDCT(1类推荐证据)

目前全球发布的肺癌筛查指南均推荐采用LDCT用于肺癌筛查。国内外多项研究均显示,与胸部X线比较,LDCT可显著提高肺癌的检出率并降低肺癌相关死亡率,具有较高的灵敏度和特异度33, 34, 35。本指南推荐采用LDCT进行肺癌筛查。

(二)其他技术(3类推荐证据)

对于可疑的气道病变,建议采用支气管镜进一步检查。通过外周血循环肿瘤细胞、肿瘤游离DNA、microRNA等手段进行肺癌筛查的方法仍在探索中。辅助检测手段和LDCT筛查的联合应用可以减少假阳性结果36

三、筛查频率(2A类推荐证据)

建议肺癌筛查的间隔时间为1年,不推荐间隔时间>2年的筛查模式。年度筛查结果正常的,建议每1~2年继续筛查。

四、筛查组织人员(1类推荐证据)

实施肺癌筛查的关键是必须有多学科专家共同协作的团队37,推荐进行肺癌筛查的医疗机构建立影像科、呼吸内科、胸外科、肿瘤科等在内的多学科协作团队。

五、筛查CT质控和阅片测量要求(2B类推荐证据) (一)CT质量控制

建议有条件的医疗机构使用16排及以上的多排螺旋CT进行LDCT肺癌筛查。受检者呈仰卧位,吸气末1次屏气完成扫描,扫描范围从肺尖至肋膈角。建议扫描矩阵设定不低于512×512,管电压100~120 kVp,管电流≤40 mAs。扫描后原始数据采用肺算法或标准算法行薄层重建,建议重建层厚为0.625~1.25 mm,层间有20%~30%重叠。肺结节的检测建议将薄层图像进行三维重建,采用最大密度投影重建,有助于结节形态的观察。

(二)阅片要求

建议使用DICOM格式在工作站或PACS进行阅片,采用肺窗(窗宽1 500~1 600 HU,窗位-650~-600 HU)及纵隔窗(窗宽350~380 HU,窗位25~40 HU)分别进行阅片。建议采用多平面重组及最大密度投影阅片,多方位显示肺结节的形态学特征。与既往检查进行对比时建议采用图像对比而非报告,这对评估结节具体的大小、形态和密度变化十分重要。

(三)测量要求

(1)测量方式:<10 mm的结节直径由整体结节长短轴直径的平均值表示,≥10 mm的结节需要分别测量记录长短径。(2)测量值的单位:测量结果和均值需记录为最接近的整毫米数(四舍五入法)。(3)随访对比:判断结节的阶段性生长应使用目前及前次的CT扫描进行对比,但评估结节的长期生长时,推荐与既往的CT扫描进行对比。

六、筛查结果管理(2A类推荐证据) (一)基线筛查结果管理建议

(1)筛查发现气道病变者建议临床干预,行支气管镜检查,如支气管镜检查结果为阴性,建议进入下年度LDCT筛查;如为阳性,建议多学科会诊后决定是否进行临床治疗或进入下年度高分辨率CT(high resolution computed tomography,HRCT)筛查。(2)无肺内非钙化性结节检出(阴性结果),或检出的非实性结节平均直径<8 mm,或实性结节/部分实性结节的实性成分平均直径<5 mm,建议进入下年度LDCT筛查。(3)检出的非实性结节平均直径≥8 mm,或实性结节/部分实性结节的实性成分平均直径≥5 mm,如无法排除恶性结节,建议抗炎治疗或随访后复查HRCT。如结节完全吸收,建议进入下年度LDCT筛查;如结节部分吸收,3个月后复查HRCT;如继续吸收或完全吸收,建议进入下年度LDCT筛查;如无变化或增大,建议多学科会诊后决定是否进行临床治疗。如抗炎治疗或随访后复查HRCT发现结节无吸收,建议多学科会诊后决定是否进行临床治疗或进入下年度HRCT筛查。对于高度怀疑恶性的结节,建议进行临床诊疗。

(二)年度筛查结果管理建议

(1)筛查发现新发气道病变者建议临床干预,行支气管镜检查,如支气管镜结果为阴性,建议进入下年度LDCT筛查;如为阳性,建议多学科会诊后决定是否进行临床治疗或进入下年度HRCT筛查。(2)如筛查结果为阴性或上年度检出结节无变化,建议进入下年度LDCT筛查。(3)如上年度检出结节增大或实性成分增多,建议进行临床诊疗。(4)检出新发非钙化结节,如结节平均直径<5 mm,建议6个月后复查HRCT,如结节未增大,建议进入下年度筛查;如增大,建议多学科会诊后决定是否进行临床治疗或进入下年度筛查。如结节平均直径≥5 mm,建议抗炎治疗或随访,3个月后复查HRCT,如结节完全吸收,建议进入下年度筛查;如结节部分吸收,6个月后复查HRCT,如继续吸收或完全吸收,建议进入下年度筛查;如无变化或增大,建议多学科会诊后决定是否进行临床治疗。如抗炎治疗或随访3个月后复查胸部HRCT,发现结节无吸收,建议多学科会诊后决定是否进行临床治疗。

(三)多发结节的管理

对于多发结节的随访频率及时间应基于最大/最可疑的结节进行评估,且每个结节应独立进行评估,除非病理学明确为转移。对于高度怀疑转移性病灶应考虑进行病理学活检。条件允许的情况下可采用支气管镜下活检对多个病灶进行病理学评估。对于患者因多发结节导致治疗方案选择困难时,建议采用多学科讨论方式确定治疗方案。

(四)假阳性与过度诊断

尽管肺癌筛查可降低肺癌死亡率,但筛查仍存在一些潜在的危害,如假阳性结果,进而导致不必要的有创检查和过度诊断和治疗38。因此,建议筛查机构通过完整的说明及介绍使筛查人群充分了解肺癌筛查的益处、局限性和潜在的危害。

(五)戒烟建议

在肺癌筛查中建议开展戒烟宣传教育,对每位吸烟的筛查对象都应建议戒烟,并提供相应的医疗干预及药物治疗,告知筛查不应被视为戒烟的替代措施。

肺癌自身抗体相关检测也可作为肺部结节危险分层的参考指标,提供生物学特性活跃或惰性的信息39。肺结节病因复杂,建议综合肺结节的影像学、生物学与临床特征,综合评估。

肺癌筛查的人群选择见图1,基线筛查出肺结节管理流程见图2,年度筛查肺结节管理流程见图3

10.3760/cma.j.cn112137-20220413-00795.F001 肺癌筛查的人群选择 10.3760/cma.j.cn112137-20220413-00795.F002 肺癌基线筛查出肺结节的管理流程

注:LDCT为低剂量螺旋CT;HRCT为高分辨率CT;NS为非实性结节;S为实性结节;PS为部分实性结节;阴性结果为无肺内非钙化性结节检出

10.3760/cma.j.cn112137-20220413-00795.F003 肺癌年度筛查管理流程及结节管理

注:LDCT为低剂量螺旋CT;HRCT为高分辨率CT

第二部分:肺癌的诊断

肺癌诊断流程见图4

10.3760/cma.j.cn112137-20220413-00795.F004 肺癌诊断流程图

注:EUS为超声内镜检查术;对于高度怀疑Ⅰ期或Ⅱ期肺癌患者,应权衡活组织检查风险和对治疗方案制定的帮助,决定是否在手术前进行活组织检查。除术中诊断困难或风险较高的情况外,临床高度怀疑Ⅰ期或Ⅱ期肺癌手术前不需要活组织检查。若在术前未获得组织诊断,在肺叶切除、双肺叶切除、全肺切除之前有必要术中诊断。根据患者个体情况,应选择创伤最小且最高效率的活组织检查方法。对于可手术患者,推荐支气管镜检查和纵隔分期(纵隔镜)于手术前及(或)手术中(在同一麻醉程序中)进行,不作为单独步骤

一、肺癌的临床表现

中央型肺癌可表现出相应的临床症状及体征,包括咳嗽、咳痰、咯血、喘鸣、胸闷、气急、胸痛、声音嘶哑、吞咽困难、上腔静脉综合征、膈肌麻痹、胸腔和心包积液、Pancoast综合征等。远处转移可因转移部位不同而出现不同的局部和全身症状。周围型肺癌早期常无呼吸道症状,随着病情的发展,可出现相应的呼吸道症状或转移相关症状。少数肺癌患者可出现一些少见的并非由肿瘤直接侵犯或转移引起的症状和体征,又称副癌综合征,可出现于肺癌诊断前或诊断后,也可同时出现,常表现为胸部以外的脏器症状,如高钙血症、抗利尿激素分泌异常综合征、异位库欣综合征、神经肌肉功能异常、血液系统异常等。

二、肺癌的辅助影像学检查

肺癌的诊治过程中,建议根据不同的检查目的,合理、有效地选择一种或多种影像学检查方法。

肺癌的医学影像学检查方法主要包括X线摄影、CT、磁共振成像(magnetic resonance imaging,MRI)、正电子发射计算机断层扫描(positron emission tomography-computed tomography,PET-CT)、超声、核素显像等方法。影像学检查主要用于肺癌诊断、分期、疗效监测、再分期及预后评估等。

(一)胸部X线摄影

胸部X线摄影是胸部基本检查方法,通常包括胸部正、侧位片。发现胸部X线影像异常时,应有针对性地选择进一步的影像检查方法。虽然X线摄影空间分辨率较高,但是密度分辨率低于CT,目前多用于入院常规检查或胸部术后复查。

(二)胸部CT

胸部CT可有效检出早期周围型肺癌、明确病变所在的部位和累及范围,是目前肺癌诊断、分期、疗效评价和随诊的主要影像学检查手段40。CT检查的优势:(1)密度分辨率高,可检出直径仅2 mm以上的微小结节及胸部X线摄影时隐秘或重叠区部位(如心影后、横膈上、纵隔旁、锁骨及肋骨投影区下)的病灶;(2)容积采集,通过CT,特别是HRCT薄层重组和三维重建可全面分析并发现对良恶性肿瘤有鉴别意义的影像学特征,也有助于精准随访;(3)对比剂增强检查提供功能信息和全面评估。使用对比剂除了可提高病灶的定性能力、显示实性病灶的血供情况,还可帮助检出、区分血管和肺门及纵隔有无增大淋巴结,对做出更准确的肺癌临床分期和疗效评价、判断手术切除的可能性等有重要意义。

(三)MRI检查

MRI一般不用于肺癌常规检查,但可选择性用于以下情况:判断胸壁或纵隔受侵情况,显示肺上沟瘤与臂丛神经及血管的关系,直径>8 mm疑难实性肺结节的鉴别诊断。MRI检查在肺癌精准疗效评价中有重要潜在价值。另外,推荐使用增强MRI检查判定有无脑转移和局部骨转移。

(四)PET-CT检查

PET-CT是诊断肺癌、分期与再分期、手术评估、放疗靶区勾画(尤其合并肺不张或有静脉CT造影禁忌证时)、疗效和预后评估的最佳方法之一。PET-CT对于脑和脑膜转移诊断的敏感度相对较差,必要时需与脑部增强MRI联合诊断以提高检出率。推荐有条件者进行PET-CT检查41, 42

(五)超声检查

超声检查一般不用于肺癌的常规检查,常用于检查腹部脏器及浅表部位淋巴结有无转移,对浅表淋巴结、邻近胸壁的肺内病变或胸壁病变进行超声引导下穿刺活检,还可用于检查有无胸膜转移、胸腔积液及心包积液,并可进行超声定位抽取积液。

(六)骨扫描

骨扫描是判断肺癌骨转移的常规检查,是筛查骨转移的首选方式。当骨扫描检查发现可疑骨转移时,可行MRI检查等进一步确认。

对肺癌患者进行分期诊断时,有条件者可进行PET-CT和脑部增强MRI检查,亦可根据当地情况进行胸部增强CT、腹部增强CT或超声(检查范围需包括锁骨上淋巴结)、头部增强CT或MRI、全身骨扫描检查。不同影像学检查方法的优缺点见表2

10.3760/cma.j.cn112137-20220413-00795.T002

肺癌检查的不同影像学方法比较

检查项目 优点 缺点
胸部X线摄影 简便、放射损伤小 检出率低
胸部CT 简便、灵敏度高 免疫治疗等非常规缓解模式的疗效评价能力有限
MRI 判断胸壁或纵隔受侵情况,观察脑、椎体有无转移 不用于肺癌常规诊断
PET-CT 肺癌诊断、分期、手术评估、放疗靶区勾画、评估疗效和预后 价格高、判断脑转移的敏感度相对略差
超声 检查胸腹腔脏器及浅表淋巴结,指导定位穿刺 不直接用于肺部检查
骨扫描 筛查骨转移的首选方式 特异度低

注:MRI为磁共振成像;PET-CT为正电子发射计算机断层扫描

三、获取肺癌细胞学或组织学检查技术

获取病理学标本时,若条件允许,除细胞学取材外,建议尽可能获取组织标本,除用于诊断外,还可以进行基因检测。

(一)痰液细胞学检查

痰液细胞学检查是诊断中央型肺癌最简单方便的无创诊断方法之一,但有一定的假阳性和假阴性可能,且分型较为困难。

(二)胸腔穿刺术

胸腔穿刺术可以获取胸腔积液进行细胞学检查,以明确病理和进行肺癌分期。胸腔积液离心沉淀的细胞块行石蜡包埋、切片和染色,可提高病理阳性诊断率。对位于其他部位的转移性浆膜腔积液亦可行穿刺获取病理证据。

(三)浅表淋巴结和皮下转移病灶活组织检查

对于肺部占位怀疑肺癌者,如发现浅表皮下病灶或浅表淋巴结肿大,可进行活检以获得病理学诊断。

(四)经胸壁肺穿刺术

在CT或超声引导下经胸壁肺穿刺是诊断周围型肺癌的首选方法之一。

(五)支气管镜检查

支气管镜检查是肺癌的主要诊断工具之一。支气管镜可进入4~5级支气管,帮助肉眼观察近端约1/3的支气管黏膜,并通过活检、刷检以及灌洗等方式进行组织学或细胞学取材,活检、刷检以及灌洗联合应用可以提高检出率。常规支气管镜检查的不足主要包括:(1)检查范围有限,对于外周2/3的呼吸道无法进行肉眼观察;(2)对于支气管腔外病变及淋巴结等无法直接观察;(3)对于呼吸道黏膜上皮异型细胞增生及原位癌的诊断率不高。荧光支气管镜是利用肿瘤组织的自体荧光特性有别于正常组织这一原理开发出的气管镜检查技术,联合常规气管镜检查可明显提高对上皮细胞癌变和浸润性肺癌的诊断。对于常规支气管镜无法观察到的病灶,可根据病灶的部位和不同单位的具体条件,通过X线透视、径向超声小探头、磁导航等技术引导支气管镜以获得病理结果。

(六)经支气管镜针吸活检术(transbronchial needle aspiration,TBNA)和超声支气管镜引导下经支气管针吸活检术(endobronchial ultrasound- guided transbronchial needle aspiration,EBUS-TBNA)

传统TBNA根据胸部病灶CT定位操作,对术者技术要求较高,不作为常规推荐的检查方法,有条件的医院可开展。EBUS-TBNA可在超声引导下实时行胸内病灶及纵隔、肺门淋巴结转移灶穿刺,更具安全性和可靠性,建议有条件的医院积极开展。当临床医师怀疑纵隔和肺门淋巴结转移而其他分期手段难以确定时,推荐采用EBUS-TBNA等有创手段明确纵隔淋巴结状态。

(七)纵隔镜检查

纵隔镜检查取样较多,是鉴别伴纵隔淋巴结肿大良恶性疾病的有效方法,也是评估肺癌分期的方法之一,但操作创伤及风险相对较大。

(八)胸腔镜

内科胸腔镜可用于不明原因的胸腔积液、胸膜疾病的诊断。外科胸腔镜可有效地获取病变肺组织,对于经支气管镜和经胸壁肺穿刺术等检查方法无法取得病理标本的肺癌,尤其是肺部微小结节病变,通过胸腔镜下病灶切除,即可明确诊断。对考虑为中晚期肺癌的患者,在其他检查方法无法明确病理的情况下,也可以采用胸腔镜行肺内病灶、胸膜活组织检查,为制定全面治疗方案提供可靠依据。

四、肺癌的血清学实验室检查

血清学检查有助于肺癌的辅助诊断、疗效判断和随访监测。

目前推荐常用的原发性肺癌标志物有癌胚抗原(carcinoma embryonic antigen,CEA)、神经元特异性烯醇化酶(neuron-specific enolase,NSE)、细胞角蛋白19片段抗原(cytokeratin 19 fragment antigen21-1,CYFRA21-1)、胃泌素释放肽前体(pro-gastrin-releasing peptide,ProGRP)、鳞状上皮细胞癌抗原(squamous cell carcinoma antigen,SCCA)等。肿瘤标志物联合检测可提高其在临床应用中的灵敏度和特异度。

肺癌的诊断通常需要结合影像学和病理学检查。虽然肺癌血清肿瘤标志物的灵敏度和特异度不高,但其升高有时可早于临床症状的出现。因此,检测肺癌相关的肿瘤标志物,有助于辅助诊断和早期鉴别诊断并预测肺癌病理类型。肿瘤标志物水平与肿瘤负荷和分期有一定关联,推荐在首次诊断及开始治疗前行肿瘤标志物检测了解其基线水平,监测治疗后动态变化可在肿瘤的疗效监测和预后判断中发挥一定作用。在对肿瘤患者长期监测过程中,改变肿瘤标志物检测方法可导致结果差异,因此,不同检测方法的肿瘤标志物结果不宜直接比较。注意排除饮食、药物、合并疾病等其他因素对检测结果的影响。对于影像学检查无明确新发或进展病灶而仅仅肿瘤标志物持续升高的患者,建议寻找原因,警惕有疾病复发或进展的可能,需密切随访。

(一)SCLC

NSE和ProGRP是诊断SCLC的首选指标。NSE由中枢或外周神经元以及神经外胚层性肿瘤分泌,当组织学结果无法确诊时,NSE可以辅助支持SCLC的诊断43, 44;溶血会显著影响NSE检测结果,应在60 min内与红细胞分离检测,防止假性升高。ProGRP作为单个标志物对SCLC诊断的特异度优于其他标志物,且与SCLC分期呈正相关,有助于鉴别SCLC和良性肺部疾病45, 46。ProGRP浓度升高也会出现在肾功能不全的患者中,其水平与血清肌酐有关,因此,当ProGRP水平升高而与患者临床症状不相符时,应首先评估患者的血清肌酐水平47

(二)非小细胞肺癌(non-small cell lung cancer,NSCLC)

在患者的血清中,CEA、SCCA和CYFRA21-1水平的升高有助于诊断NSCLC。CEA在肺腺癌和大细胞肺癌中升高最为明显,且灵敏度较高。但需注意CEA增高还可见于消化道肿瘤和肺间质纤维化等。联合检测CYFRA21-1和CEA可以提高对肺腺癌诊断的灵敏度和特异度48, 49。长期吸烟人群CEA水平可能略高于健康人群。CYFRA21-1也是NSCLC的敏感指标之一,应注意外伤和唾液污染以及在肾功能衰竭的患者中CYFRA21-1可能会出现假性升高。SCCA对鳞状上皮肿瘤如肺鳞状细胞癌有较高的特异度,可以辅助组织学诊断50。然而,单一的标志物并不能鉴别SCLC和NSCLC。约10%的NSCLC对神经内分泌标志物中至少1种存在免疫反应51。若联合检测NSE、ProGRP、CYFRA21-1、CEA和SCCA等指标,可提高鉴别准确率。

第三部分:肺癌的病理学评估 一、病理学亚型 (一)病理学评估

病理学评估的目的在于明确病变性质并为临床病理分期提供相关信息,同时还包括分子检测标本的质量控制。病理学评估标本类型包括活检标本、细胞学标本、手术切除标本及拟进行分子检测的其他标本52

1.活检标本或细胞学标本:(1)依据2021年版世界卫生组织(World Health Organization,WHO)分类准确诊断53, 54,病理诊断同时尽可能保留足够标本进行分子生物学和免疫治疗相关检测(1类推荐证据)。(2)治疗后疾病进展的患者再次活检时,在明确组织类型前提下,根据诊治需求做相应的分子病理检测(2A类推荐证据)。(3)争取明确组织亚型,当标本无明显分化或表型特征时才可诊断非小细胞癌非特指型(non-small cell carcinoma-not otherwise specified,NSCC-NOS)(2A类推荐证据)。(4)对于细胞学标本,尽可能同时制作细胞蜡块(2B类推荐证据)。

2.手术切除标本:手术切除标本用于明确肿瘤的性质和组织类型、肿瘤分期、分子病理检测和预后相关信息(包括肿瘤大小、周围组织侵犯情况、手术切缘及淋巴结转移等)(2A类推荐证据)。(1)淋巴结转移数目及部位需要在报告内详细标明,原发肿瘤浸润至邻近淋巴结应诊断为淋巴结转移;(2)可疑胸膜侵犯时应使用弹力纤维特殊染色进一步证实;(3)气腔内播散(spread through air spaces,STAS)建议在报告中注明(2B类推荐证据);(4)对肿瘤大小以及肿瘤与手术切缘、周围组织等的距离应当进行准确测量,测量精度为mm;(5)对于肺内多发病灶,建议按照国际分类标准推荐的方法评估各病灶的关系。

3.新辅助治疗后肺癌手术切除标本病理评估55, 56:NSCLC采用新辅助治疗(如化疗、放化疗、分子靶向治疗、免疫治疗或未来新疗法,单药或者联合给药),病理学评估能够较准确反映临床疗效,是新辅助治疗后疗效评估的重要方法。对所有带瘤床的切片采用半定量评估方法综合评估瘤床内的主要成分百分比,目前推荐评估3种主要成分,包括残存活肿瘤细胞、坏死和间质(间质主要为纤维组织和炎性病变),3种成分之和为百分之百。主要病理缓解(major pathologic response,MPR)是指新辅助治疗后肿瘤床内的残存活肿瘤细胞的百分比≤10%,无论淋巴结内有无活肿瘤细胞残存;病理完全缓解(pathologic complete response,PCR)是指新辅助治疗后瘤床内和淋巴结内均无残存活肿瘤细胞。目前,对于淋巴结病理反应评估的临床意义尚不明确。

NSCLC新辅助治疗后病理分期采用美国癌症联合会(AJCC)第8版TNM分期系统,T分期中肿瘤大小调整为残存肿瘤的大小。N分期需要根据淋巴结内有无肿瘤细胞归入相应N分期。

(二)病理组织学类型

组织学分型采用2021年版WHO肺肿瘤组织学分型标准53, 54

1.组织标本诊断原则(2A类推荐证据)

(1)鳞状细胞癌:鳞状细胞癌是出现角化和(或)细胞间桥或表达鳞状细胞分化标志的上皮性恶性肿瘤。鳞状细胞癌分为鳞状细胞癌、非特指(包括角化型、非角化型和基底样鳞癌)和淋巴上皮癌。淋巴上皮癌为低分化的鳞状细胞癌伴有数量不等的淋巴细胞、浆细胞浸润,EB病毒常常阳性,需注意与鼻咽癌鉴别。鳞状非典型增生和原位鳞癌为鳞状前体病变。

(2)腺癌:腺癌包括微浸润性腺癌(minimally invasive adenocarcinoma,MIA)、浸润性非黏液腺癌、浸润性黏液腺癌、胶样腺癌、胎儿型腺癌和肠型腺癌。MIA是指肿瘤以贴壁型成分为主,且浸润成分最大径≤5 mm。MIA肿瘤大小≤30 mm且均无胸膜、支气管、脉管侵犯、肿瘤性坏死以及STAS。肺浸润性非黏液腺癌为形态学或免疫组织化学具有腺样分化的证据。常见亚型包括贴壁型、腺泡型、乳头型、微乳头型和实体型,常为多个亚型混合存在。病理诊断按照各亚型所占比例从高至低依次列出,各种亚型所占比例以5%为增量。直径>30 mm的非黏液型纯贴壁生长的肺腺癌应诊断为贴壁型浸润性非黏液腺癌。早期浸润性非黏液性腺癌分级方案由国际肺癌研究协会(International Association for Study of Lung Cancer,IASLC)病理委员会提出。根据腺癌中占优势的组织学类型以及高级别结构的占比分成3级,1级为高分化,2级为中分化,3级为低分化。高分化为贴壁为主型无高级别成分,或者伴有<20%高级别成分;中分化为腺泡或乳头为主型无高级别成分,或者伴有<20%高级别成分;低分化为任何组织学类型腺癌伴有≥20%的高级别成分。高级别结构包括实体型、微乳头型、筛孔、复杂腺体结构(即融合腺体或单个细胞在促结缔组织增生的间质中浸润)。原位腺癌(adenocarcinoma in situ,AIS)指单纯贴壁生长模式的腺癌,目前,AIS和不典型腺瘤样增生(atypical adenomatous hyperplasia,AAH)被归入腺体前驱病变。

(3)腺鳞癌:指含有腺癌和鳞状细胞癌2种成分,每种成分占全部肿瘤占比≥10%。

(4)神经内分泌肿瘤:包括神经内分泌瘤(neuroendocrine tumors,NETs)和神经内分泌癌(neuroendocrine carcinomas,NECs);其中NETs包括低级别典型类癌(typical carcinoid,TC)、中级别不典型类癌(atypical carcinoid,AC),NECs包括SCLC、大细胞神经内分泌癌(large cell neuroendocrine carcinoma,LCNEC)。复合型SCLC是指SCLC合并NSCLC的任何一种组织学类型。合并大细胞并且大细胞成分占比≥10%时,诊断为复合型SCLC/LCNEC或SCLC/大细胞癌(large cell carcinoma,LCC),合并其他NSCLC无比例要求。复合型LCNEC指LCNEC伴其他NSCLC成分57, 58。核分裂及坏死指标是区分4种神经内分泌肿瘤类型的主要病理指标(2A类推荐证据)。Ki-67指数仅在小活检标本中对鉴别高级别、低级别NECs有帮助(2B类推荐证据)58, 59, 60。神经内分泌标志物NCAM(CD56)、chromogranin A和synaptophysin仅用于形态学怀疑神经内分泌肿瘤的病例,TC和AC至少表达2种神经内分泌标志物,SCLC和LCNEC至少表达1种神经内分泌标志物。少部分SCLC可以无任何神经内分泌标志物表达。

类癌非特指(carcinoid tumor,NOS)适用于TC和AC不易区分的情况,建议标注核分裂数、有无坏死以及Ki-67指数。类癌非特指主要应用于以下情况:一些小活检或细胞学标本由于组织有限难以区分TC或AC;肺转移性类癌;一些手术标本没有提供肿瘤组织全部切片。

(5)大细胞癌:大细胞癌为一种未分化非小细胞癌,在细胞形态、组织结构、免疫组织化学以及组织化学方面缺乏小细胞癌、鳞癌、腺癌,以及巨细胞癌、梭形细胞癌、多形性癌的特点,是排除性诊断。

(6)肉瘤样癌:肉瘤样癌包括多形性癌、癌肉瘤和肺母细胞瘤等,多形性癌是包含至少10%梭形或巨细胞成分的NSCLC,或完全为梭形细胞癌或巨细胞癌成分。癌肉瘤是混合肉瘤成分的NSCLC。肺母细胞瘤包含低级别胎儿型腺癌及原始间充质成分的双向分化性肿瘤。

(7)其他上皮源性肿瘤:胸部SMARCA4缺失未分化肿瘤(SMARCA4-deficient undifferentiated tumor,SMARCA4-UT)是一种高级别恶性肿瘤,主要累及成年人胸部,表现为未分化或横纹肌样表型并伴有SMARCA4缺失。细胞毒性化疗通常对该肿瘤无效。睾丸核蛋白(nuclear protein in testis,NUT)癌为一种低分化癌,有15q14的NUTM1基因重排,表达NUT。NUT癌极具侵袭性,大多数化疗方案无效,靶向BRD4的BET小分子抑制剂治疗NUT癌的临床研究正在进行中。其他少见类型请参阅2021年版WHO分类。

(8)转移性肿瘤:肺是全身肿瘤的常见转移部位,应注意除外转移性肿瘤。免疫组织化学有助于鉴别组织来源,如肺(TTF-1和Napsin A)、乳腺(GCDFP15、Mammaglobin和GATA-3)、肾细胞癌(PAX8和RCC)、胃肠道(CDX2和Villin)、前列腺(NKX3.1和前列腺特异性抗原)和间皮(WT-1、Calretinin、D2-40和GATA-3)等(2A类推荐证据)。

2.细胞学标本诊断原则(2A类推荐证据):(1)尽可能少使用NSCC-NOS的诊断;(2)当有配对的细胞学和活组织检查标本时,应综合诊断以达到一致性;(3)肿瘤细胞或可疑肿瘤细胞的标本,均应尽可能制作细胞学蜡块;(4)细胞学标本分型不建议过于细化,仅作腺癌、鳞状细胞癌、NECs或NSCC-NOS分型即可。

二、免疫组织化学检测(2A类推荐证据) (一)原则

对于小活检标本谨慎使用免疫组织化学染色,以便保留组织用于治疗相关检测。

(二)形态学不明确的肺癌

活检标本使用1个腺癌标志物TTF-1和1个鳞状细胞癌标志物(P40)可以解决绝大部分NSCLC的分型问题52, 53。对于手术标本:(1)使用一组抗体鉴别腺癌、鳞状细胞癌61, 62, 63。(2)当出现神经内分泌形态时,用一组分子标志物证实神经内分泌分化。(3)对于分化差的癌或恶性肿瘤,可行NUT、SMARCA4(BRG-1)和(或)INI-1、SOX-2等免疫组化检测58, 59,以除外NUT癌、SMARCA4-UT等少见组织学类型。(4)对于具有明显淋巴细胞浸润的低分化癌或非角化型鳞癌进行EBER原位杂交检测。

(三)晚期NSCLC

对于晚期NSCLC,与驱动基因检测同样重要的是应检测程序性死亡配体(programmed death ligand-1,PD-L1)的表达情况(2A类推荐证据)。

三、分子病理学检测 (一)标本类型

除酸处理的标本外,甲醛固定、石蜡包埋标本、细胞块和细胞涂片均适用于分子检测64, 65, 66, 67。所有待检测组织学和细胞学标本需经过病理医师质控,评估肿瘤类型、细胞含量、坏死率,筛选适合分子检测的组织学类型,并确保有足量肿瘤细胞提取DNA或RNA(1类推荐证据)。如具备条件可进行肿瘤富集操作(2A类推荐证据)。

(二)基本原则

1.尽量保留足够组织进行分子检测:标本常规组织学诊断后尽量保留足够组织进行分子生物学检测,根据分子分型指导治疗68, 69, 70(1类推荐证据);晚期NSCLC组织学诊断后需保留足够组织进行分子生物学检测,根据分子分型指导治疗67, 68, 69, 70, 71, 72, 73, 74, 75(2A类推荐证据)。

2.含腺癌成分的NSCLC分子检测说明:含腺癌成分的NSCLC,无论其临床特征(如吸烟史、性别、种族或其他等),应常规行表皮生长因子受体(epidermal growth factor receptor,EGFR)、间变性淋巴瘤激酶(anaplastic lymphoma kinase,ALK)重排、ROS1重排、BRAF V600E突变、RET重排、MET14外显子跳跃突变、NTRK1/2/3重排的分子生物学检测(1类推荐证据),ⅠB~Ⅲ期术后患者手术病理标本需常规行EGFR突变检测(1类推荐证据)。检测方法应选择经国家官方批准的试剂和平台设备,也可使用获官方批准的二代测序(next generation sequencing,NGS)检测试剂平台。组织有限和(或)不足以进行分子生物学检测时,可利用血浆游离DNA检测EGFR突变(2A类推荐证据)64, 65

3.NSCLC推荐必检基因:NSCLC推荐检测必检基因为EGFR、ALK、ROS1、RET、BRAFV600E和MET14外显子跳跃突变(1类推荐证据),扩展基因为包括MET扩增或过表达、HER2、KRAS、NTRK等(2A类推荐证据)64, 65。采用经过验证的NGS平台或RT-PCR多基因联检平台可同时检测全部必检基因和扩展基因;若组织标本不可及,可考虑利用血浆循环肿瘤 DNA(circulating tumor DNA,ctDNA)进行检测(2B类推荐证据)。

4.耐药后基因检测:对于EGFR-酪氨酸激酶抑制剂(tyrosine kinase inhibitor,TKI)耐药患者,建议二次活组织检查进行继发耐药EGFR T790M检测;对于无法获取组织的患者,可用ctDNA行EGFR T790M检测(2A类推荐证据)64, 65。当ctDNA阴性时,仍应建议患者行组织检测以明确EGFR T790M突变状态。

原发肿瘤和转移病灶均适于靶向驱动基因检测(1类推荐证据)64, 6576, 77, 78

肿瘤免疫治疗患者的筛选方法64, 65:(1)免疫组织化学检测NSCLC的PD-L1表达情况可发现可能对免疫治疗有效的患者79。免疫组织化学检测PD-L1有多种克隆号的抗体,对应不同的治疗药物,判定标准需参阅各试剂盒的使用说明,负责诊断的病理医师需通过相应的判读培训(2B类推荐证据)80, 81, 82。(2)肿瘤突变负荷(tumor mutation burden,TMB)可能是预测免疫治疗效果的又一标志物83, 84。目前,在TMB检测方法及阈值的选择上还无统一的标准(3类推荐证据)。

第四部分:肺癌的分期治疗原则

(1)外科手术根治性切除是Ⅰ、Ⅱ期NSCLC的推荐优选局部治疗方式。(2)Ⅲ期NSCLC是一类异质性明显的肿瘤。根据国际肺癌研究学会第8版,Ⅲ期NSCLC分为ⅢA期、ⅢB期、ⅢC期。ⅢC期和绝大部分ⅢB期归类为不可切除的Ⅲ期NSCLC。治疗以根治性同步放化疗为主要治疗模式(1类推荐证据)。ⅢA期和少部分ⅢB期NSCLC的治疗模式分为不可切除和可切除。对于不可切除者,治疗以根治性同步放化疗为主;对于可切除者,治疗模式为以外科为主的综合治疗(2A类推荐证据)。(3)Ⅳ期NSCLC患者的全身治疗建议在明确患者NSCLC病理类型(鳞状细胞癌或非鳞状细胞癌)和驱动基因突变状态并进行美国东部肿瘤协作组功能状态评分的基础上,选择适合患者的全身治疗方案(表3)。

10.3760/cma.j.cn112137-20220413-00795.T003

美国东部肿瘤协作组功能状态评分原则

评分(分) 状态
0 活动能力完全正常,与起病前活动能力无任何差异
1 能自由走动及从事轻体力活动,包括一般家务或办公室工作,但不能从事较重的体力活动
2 能自由走动及生活自理,但已丧失工作能力,日间不少于一半时间可以起床活动
3 生活仅能部分自理,日间50%以上时间卧床或坐轮椅
4 卧床不起,生活不能自理
5 死亡
第五部分:肺癌的治疗 一、Ⅰ、Ⅱ期NSCLC患者的综合治疗(<xref ref-type="fig" rid="F5">图5</xref>) 10.3760/cma.j.cn112137-20220413-00795.F005 Ⅰ、Ⅱ期非小细胞肺癌治疗流程图

注:R0为完整切除切缘;R1为镜下发现不完整切除切缘;R2为肉眼可见肿瘤残余;高危因素包括如低分化肿瘤(包括神经内分泌肿瘤但不包括分化良好的神经内分泌肿瘤)、脉管侵犯、脏层胸膜侵犯、气腔内播散(STAS)、姑息性切除。以上因素独立来看不一定为高危指征,在决定辅助化疗时需要纳入整体考量。ⅠB ~Ⅱ期术后发现表皮生长因子受体敏感基因突变的患者,可行奥希替尼辅助靶向治疗。Ⅱ期术后发现EGFR敏感突变的患者,可行埃克替尼辅助靶向治疗。驱动基因阴性的患者PD-L1表达阳性(≥1%)可在铂类为基础的化疗后行阿替利珠辅助治疗

(一)基本原则

根治性外科手术切除(解剖性肺切除和纵隔淋巴结清扫或采样)是早期NSCLC的推荐首选局部治疗方式。

(二)外科治疗的重要性

(1)外科医师应积极参与对患者临床分期、切除可能性的判断和功能评估,根据肿瘤进展程度和患者的功能状况决定手术指征和手术方式。(2)高危患者身体功能状况可能无法耐受根治性手术切除时,应首先由包括外科医师在内的多学科团队进行讨论,决定其他局部治疗方式,如立体定向放疗(stereotactic body radiotherapy,SBRT)、冷冻和射频消融等。

(三)手术方式

1.原则:完整彻底切除是保证手术根治性、分期准确性、加强局部控制和长期生存的关键。

2.手术方式:解剖性肺切除仍是标准术式85, 86(1类推荐证据)。(1)1995年LCSG821前瞻性研究结果显示,T1期肺癌肺叶切除的局部复发率明显低于亚肺叶切除,生存率显著高于亚肺叶切除,因此,目前早期肺癌的标准术式仍为解剖性肺叶切除87, 88, 89(1类推荐证据)。(2)对于部分中央型肺癌,在手术技术能够保证切缘的情况下,支气管和(或)肺动脉袖式肺叶切除围手术期风险小而疗效优于全肺切除,为推荐术式90, 91, 92, 93, 94(1类推荐证据)。(3)亚肺叶切除:①解剖性肺段切除:JCOG0802早期肺癌肺叶切除与肺段切除比较的前瞻性结果显示,对于≤2 cm,薄层扫描CT上实性成分占比(consolidation tumor ratio,CTR)>0.5的早期肺癌,肺段切除组除了肺漏气外,与肺叶切除组围手术期并发症几乎无差异。术后肺功能的保留肺段切除组明显优于肺叶切除组,但未达到试验设计要求达到10%以上的差异。无复发生存肺段切除组与肺叶切除组无显著差异,总生存肺段切除优于肺叶切除(可能是肺叶切除组非肺癌死亡高于肺段切除组引起)。肺段切除组局部复发率高于肺叶切除组8495。肺段切除在保留肺功能及生存率上是否优于肺叶切除,尚需要其他前瞻性临床试验结果证实。因此,肺段切除应为含磨玻璃(ground-glass opacity,GGO)成分早期肺癌可以接受的手术方式,目前意向性肺段切除可适用于以下情况(1类推荐证据):(a)患者功能状况无法耐受肺叶切除;(b)肿瘤直径≤2 cm的周围型小结节、同时具备以下条件之一:GGO成分(亦即IASLC第八版分期为T1a~T1b);长期随访肿瘤倍增时间≥400 d;(c)肺段切除要求83, 848896:应保证切缘≥2 cm或≥病灶直径;除非患者功能状况不允许,否则同样应行肺门、纵隔淋巴结采样,尤其是实密成分较多的GGO结节(2A类推荐证据)。②楔形切除:影像学上以GGO表现为主≤2 cm的肺结节大多为非浸润性肺癌。JCOG0804前瞻性多中心单臂临床试验结果显示:对于≤2 cm,薄层扫描CT上GGO为主CTR≤0.25(亦即按照第八版IASLC肺癌分期Tis或Tmi)的早期肺癌,接受亚肺叶切除(82%为楔形切除),5年无复发生存达到99.7%,且无局部复发事件。其中,非浸润性肺癌占97.7%。虽然JCOG0804未纳入肺叶切除作为对照,但从研究结果看,影像学上以磨玻璃表现为主≤2 cm的肺结节患者5年无复发生存达到99.7%,且手术方式以楔形切除为主。因此,意向性楔形切除可作为以下情况首选推荐(2B类推荐证据):(a)直径 ≤2 cm的周围型小结节,且具备以下条件之一:实密成分 ≤0.5 cm;术中冰冻病理为:非浸润性肺癌(AAH、AIS或MIA);(b)楔形切除要求:应保证肉眼可见切缘>5 mm,若不足5 mm,需冰冻切片证实切缘阴性;不要求常规行淋巴结活检。若遇到明显肿大淋巴结,则需采样。

3.手术路径:(1)开胸和微创手术具备同样的肿瘤学效果,外科医师可根据习惯和熟练程度选择手术方式97(1类推荐证据)。(2)已证实胸腔镜(包括机器人辅助)等微创手术安全可行,围手术期结果优于开胸手术,长期疗效不亚于开胸手术。因此,在外科技术可行且不牺牲肿瘤学原则的前提下推荐胸腔镜手术路径98, 99(1类推荐证据)。

4.淋巴结清扫标准89100, 101, 102(2A类推荐证据):(1)淋巴结清扫及采样是外科手术的必要组成部分,常规至少应整块清除或系统采样3组纵隔淋巴结(左侧:第4L、5、6、7、8、9组,右侧第2R、4R、7、8、9组)。对于淋巴结清扫或采样数目,至少清扫或采样纵隔+肺内共12个淋巴结。(2)Ⅰ~Ⅲ期肺癌在术前规范纵隔分期未发现淋巴结转移(PET-CT或EBUS、纵隔镜检查阴性)的前提下,淋巴结清扫较采样并未明显升期或带来术后生存优势,但术前仅行常规影像分期(未行PET或EBUS、纵隔镜分期)者,仍推荐行淋巴结清扫102(1类推荐证据)。(3)术前影像学显示纯GGO为主(成分>50%)且术中冰冻为伏壁生长为主的浸润型腺癌,纵隔淋巴结转移概率极低,可选择性采样1~3组(左侧第4、5、7组,右侧第2、4、7组)纵隔淋巴结。

(四)手术切除标准<sup>[<xref ref-type="bibr" rid="R102">102</xref>]</sup>

(1)完整切除包括阴性切缘(支气管、动脉、静脉、支气管周围、肿瘤附近组织)。无论何时,如有出现切缘受累、未切除的阳性淋巴结、淋巴结外侵犯或转移性胸腔积液或心包积液,即为不完整切除。(2)完整切除为R0,镜下发现不完整切除或淋巴结包膜外浸润为R1,肉眼可见肿瘤残余为R2。镜下切缘阴性但纵隔淋巴结清扫未达到标准或最上纵隔淋巴结阳性为Rx103

(五)术后辅助治疗<sup>[<xref ref-type="bibr" rid="R104">104</xref>]</sup>

1.完整切除切缘阴性(R0切除)NSCLC后续治疗:(1)ⅠA(T1a/b/cN0)期患者术后定期随访105, 106(1类推荐证据)。(2)ⅠB(T2aN0)期患者术后可随访。ⅠB期患者术后辅助治疗需行多学科评估,对每例患者评估术后辅助化疗的益处与风险。有高危险因素者[如低分化肿瘤(包括神经内分泌肿瘤但不包括分化良好的神经内分泌肿瘤)、脉管侵犯、脏层胸膜侵犯、STAS、姑息性切除]推荐进行术后辅助化疗107, 108(2A类推荐证据)。病理亚型以实体型或微乳头为主的ⅠB期腺癌患者也可考虑辅助化疗109(2B类推荐证据)。(3)ⅡA/ⅡB期患者,推荐以铂类为基础的方案进行辅助化疗,不建议行术后辅助放疗110, 111, 112, 113(1类推荐证据)。(4)ⅠB~Ⅱ期术后发现EGFR敏感基因突变的患者,可行奥希替尼辅助靶向治疗114(1类推荐证据)。ⅡA~Ⅲ期术后发现EGFR敏感基因突变的患者,可行埃克替尼辅助靶向治疗(1类推荐证据)115。ⅡA~Ⅲ期术后驱动基因阴性的患者,如PD-L1表达阳性(≥1%)可在铂类为基础的化疗后行阿替利珠辅助治疗(2A类推荐证据)116

10.3760/cma.j.cn112137-20220413-00795.F006 多原发肺癌诊治流程图

2.非完整切除切缘阳性NSCLC的后续治疗:(1)ⅠA(T1a/b/cN0)期患者,术中发现为R1或R2切除,均首选再次手术,放疗也可供选择117(2B类推荐证据)。(2)ⅠB(T2aN0)/ⅡA(T2bN0)期患者,术中发现为R1或R2切除,均应首选再次手术,放疗也可供选择,后续化疗视情况而定。ⅠB期有高危险因素者[如低分化肿瘤(包括神经内分泌肿瘤但不包括分化良好的神经内分泌肿瘤)、脉管侵犯、楔形切除、脏层胸膜侵犯、未知的淋巴结状态Rx]可考虑进行术后辅助化疗,病理亚型以实体型或微乳头为主的ⅠB期腺癌患者也可考虑辅助化疗109(2B类推荐证据)。ⅡA期患者均应进行辅助化疗118, 119(2A类推荐证据)。(3)ⅡB期R1切除患者可选择再次手术和术后辅助化疗,或同步或序贯放化疗120;R2切除患者可选择再次手术和术后辅助化疗,或者同步放化疗(2A类推荐证据)。

(六)同期多原发癌(2B类推荐证据)(<xref ref-type="fig" rid="F6">图6</xref>)

1.诊断:病理组织类型不同或为不同的AIS;若病理组织类型相同,肿瘤位于不同肺叶,且不能有纵隔淋巴结转移121, 122, 123

2.分期:针对每一个病灶进行TNM分期121, 122, 123(2A类推荐证据)。

3.治疗:首选外科手术治疗。(1)优先处理主病灶,兼顾次要病灶,在不影响患者生存及符合无瘤原则的前提下尽量切除病灶,并尽可能保留肺功能(如亚肺叶切除)121(2A类推荐证据)。(2)次要病灶若为纯GGO,受限于心肺功能无法全部切除病灶时,建议6~12个月随访1次,若无变化,每2年随访1次(2A类推荐证据)。

(七)不适合手术或拒绝手术的早期NSCLC推荐放射治疗

不适合手术或拒绝手术的早期NSCLC的放射治疗:首选SBRT(1类推荐证据),适应证包括:(1)不耐受手术的早期NSCLC:高龄、严重内科疾病、T1~2N0M0期。(2)可手术但拒绝手术的早期NSCLC。(3)不能施行或拒绝接受病理诊断的临床早期肺癌,在满足下列条件的情况下,可考虑进行SBRT治疗:①明确的影像学诊断,病灶在长期随访(>2年)过程中进行性增大,或GGO影的密度增高、实性比例增大,或伴有血管穿行及边缘毛刺样改变等恶性特征;至少2种影像学检查(如胸部增强1~3 mm薄层CT和全身PET-CT)提示恶性;②经肺癌多学科协作组讨论确定;③患者及家属充分知情同意。(4)相对适应证:①T3N0M0;②同时性多原发NSCLC。

二、Ⅲ期NSCLC患者的综合治疗 (一)可切除类Ⅲ期NSCLC(<xref ref-type="fig" rid="F7">图7</xref>、<xref ref-type="fig" rid="F8">8</xref>) 10.3760/cma.j.cn112137-20220413-00795.F007 ⅢA期 N0~1非小细胞肺癌治疗流程图

注:T3侵犯为侵犯壁层胸膜(PL3)、胸壁(包括肺上沟瘤)、膈神经、心包壁;T4侵犯包括侵犯横膈、纵隔、心脏、大血管、气管、喉返神经、食管、椎体、隆突;ⅢA期术后发现表皮生长因子受体敏感基因突变的患者,可行奥希替尼、埃克替尼辅助靶向治疗。驱动基因阴性的患者PD-L1表达阳性(≥1%)可在铂类为基础的化疗后行阿替利珠辅助治疗。不可切除类Ⅲ期NSCLC同步放化疗后无疾病进展的患者,可行度伐利尤单抗巩固治疗

10.3760/cma.j.cn112137-20220413-00795.F008 ⅢA、ⅢB期N2及ⅢB、ⅢC期N3非小细胞肺癌治疗流程图

注:T3侵犯为侵犯壁层胸膜(PL3)、胸壁(包括肺上沟瘤)、膈神经、心包壁;ⅢA期术后发现表皮生长因子受体敏感基因突变的患者,可行奥希替尼、埃克替尼辅助靶向治疗。驱动基因阴性的患者PD-L1表达阳性(≥1%)可在铂类为基础的化疗后行阿替利珠辅助治疗。不可切除类Ⅲ期NSCLC同步放化疗后无疾病进展的患者,可行度伐利尤单抗巩固治疗

Ⅲ期NSCLC可切除类是指T3N1、T4N0~1和部分T1~2N2,少部分ⅢB期(指T3N2,N2为单一淋巴结转移且直径<3 cm)。外科的角色主要取决于肿瘤的可切除性。多学科综合治疗的模式是以外科为主的综合治疗。

1.手术耐受性评估:术前必须评估患者的心肺功能,推荐使用心电图和肺功能检查进行评估124(1类推荐证据)。由于ⅢA期患者术后需行辅助治疗,因此术前应考虑患者的残肺功能是否可以耐受化疗和放疗125(2A类推荐证据)。术前需排除患者其他器官的严重合并症,包括6个月内心脑血管事件(心肌梗死、卒中等)、心力衰竭、心律失常、肾衰竭等126, 127(2A类推荐证据)。高龄患者的数据报道较少,手术应谨慎128, 129(2A类推荐证据)。

2.手术时机和方式:可能完全切除的肿瘤患者,新辅助治疗的最佳模式尚未确定,是否接受术前新辅助治疗对生存的改善差异不明显,但均建议接受术后辅助治疗130, 131(2B类推荐证据)。外科医师可在综合评估患者情况后决定手术时机(2B类推荐证据)。

推荐进行彻底的纵隔淋巴结清扫,即右侧清扫2R、4R、7、8、9组淋巴结,左侧清扫4L、5~9组淋巴结132(1类推荐证据)。推荐整块切除淋巴结133(2A类推荐证据)。

手术的原则为在完全切除肿瘤的基础上尽可能保留肺组织129(1类推荐证据)。在术前充分评估的基础上,视肿瘤浸润范围可行肺叶、复合肺叶、袖状以及全肺切除,推荐患者至有条件的大型医院进行此类手术134, 135(2A类推荐证据)。

ⅢA期可手术的NSCLC完全切除术后推荐辅助含铂两药化疗(1类推荐证据)。不常规推荐术后辅助放疗,建议进行多学科会诊,评估术后辅助放疗对于N2期患者的治疗获益与风险(2B类推荐证据)。对于术后发现EGFR敏感基因突变的患者,可行埃克替尼115、奥希替尼辅助靶向治疗114(1类推荐证据)。术后驱动基因阴性的患者,如PD-L1表达阳性(≥1%)可在铂类为基础的化疗后行阿替利珠辅助治疗(2A类推荐证据)116

(二)不可切除类Ⅲ期NSCLC

Ⅲ期不可切除的NSCLC包括以下几类:(1)同侧多枚成团或多站纵隔淋巴结转移[ⅢA(T1~3N2)或ⅢB(T3~4N2)]。(2)对侧肺门、纵隔淋巴结,或同侧、对侧斜角肌或锁骨上淋巴结转移[ⅢB、ⅢC(T1~4N3)]。(3)不可或不适合切除肿瘤包括部分肺上沟瘤[主要指肿瘤侵犯椎体超过50%;臂丛神经受侵犯,食管、心脏或气管受侵犯等,ⅢA(T3N1、T4N0~1)]。

局部晚期无法手术患者治疗方法选择,除了需要考虑到肿瘤因素外,还需要结合患者一般情况和治疗前有无明显体质下降,以及正常组织器官(如肺、脊髓、心脏、食管和臂丛神经等)对放疗的耐受剂量等进行综合考虑,根据实际情况选择放化疗剂量。

1.推荐根治性同步放化疗136, 137, 138(1类推荐证据):(1)同步放疗:①放疗靶区:原发灶+转移淋巴结累及野放疗,累及野放疗可以更优化肿瘤组织剂量和正常组织的毒性剂量139, 140;PET-CT图像能明显提高靶区勾画的准确性,特别是存在明显肺不张或静脉增强禁忌的患者141。②放疗剂量:推荐根治性处方剂量为60~70 Gy,2 Gy/次,最小处方剂量至少60 Gy,但最佳放疗剂量仍不确定142,74 Gy不推荐作为常规用量143。③可以采用更新的放疗技术保证根治性放疗的实施。临床常规采用三维适形放疗(3DCRT)、调强放疗(intensity modulated radiotherapy,IMRT),但IMRT为更好的选择,其能降低高级别放射性肺炎的发生144,可减少不良反应。(2)以铂类为主的同步化疗方案(1类推荐证据):①依托泊苷+顺铂145, 146;②长春瑞滨+顺铂136;③培美曲塞+顺铂或卡铂(非鳞状细胞癌)136147;④紫杉醇类+顺铂或卡铂147。建议同步放化疗期间至少完成2个周期的常规化疗方案,也可采用每周低剂量化疗方案。

2.序贯放化疗:若患者无法耐受同步化放疗,序贯放化疗优于单纯放疗148, 149(2A类推荐证据)。放疗方案同前,增加放疗剂量有可能改善患者生存(2B类推荐证据),最佳放疗剂量不确定。序贯化疗方案如下(1类推荐证据):(1)长春瑞滨+顺铂;(2)紫杉醇+顺铂或卡铂;(3)培美曲塞+顺铂或卡铂(非鳞状细胞癌)150, 151。建议行2~4个周期评估后再行放疗。

3.诱导和巩固化疗:(1)若无法耐受化放疗综合性治疗[患者一般情况差,伴内科合并症,体质明显下降和(或)患者意愿],单纯放疗是标准治疗152, 153, 154(2A类推荐证据)。放疗方案同根治性同步放化疗中的放疗方案,增加放疗剂量有可能改善生存(2B类推荐证据),最佳放疗剂量不确定。(2)尽管对于大负荷肿瘤,临床上通过诱导化疗来降低肿瘤体积,获得化放疗同步治疗机会,但无证据显示诱导化疗能提高生存获益155, 156, 157(2A类推荐证据)。(3)同步化放疗后推荐度伐利尤单抗进行巩固治疗158(1类推荐证据);若不使用度伐利尤单抗进行巩固治疗,对于潜在转移风险大或同步期间化疗未达到足量的患者,可考虑应用巩固化疗159, 160(2A类推荐证据)。

三、Ⅳ期NSCLC患者的全身治疗(<xref ref-type="fig" rid="F9">图9</xref>) (一)一线治疗

1.非鳞状细胞癌驱动基因阳性且不伴有耐药基因突变患者的治疗:(1)EGFR敏感基因突变的患者:推荐使用EGFR-TKI,可选择奥希替尼161, 162、吉非替尼163, 164、厄洛替尼165、埃克替尼166、阿法替尼167, 168、阿美替尼169, 170(1类推荐证据)或达克替尼171(无脑转移者,2A类推荐证据),脑转移患者优先推荐奥希替尼161, 162,(2A类推荐证据);也可使用厄洛替尼联合贝伐珠单抗172(2A类推荐证据),化疗联合吉非替尼173, 174[功能状态(performance status,PS)评分为2分以下];对于G719X、L861Q、S768I等非经典基因突变的患者,首先推荐阿法替尼175。一线已经开始化疗的过程中发现EGFR敏感基因突变的患者,推荐完成常规化疗(包括维持治疗)后换用EGFR-TKI,或者中断化疗后开始靶向治疗(2A类推荐证据)。(2)ALK融合基因阳性的患者:可选择阿来替尼176, 177、塞瑞替尼178、恩沙替尼179、克唑替尼180, 181(1类推荐证据)、布格替尼182(2A类证据)。一线已经开始化疗的过程中发现ALK融合基因阳性的患者,推荐可完成常规化疗,包括维持治疗后换用靶向治疗或者中断化疗后开始靶向治疗(2A类推荐证据)。(3)ROS1融合基因阳性的患者:推荐选择克唑替尼183(1类推荐证据),也可接受含铂双药化疗或者含铂双药化疗+贝伐珠单抗(2A类证据)。(4)MET14外显子跳突的晚期非鳞状细胞癌患者无法耐受化疗可使用赛沃替尼184(2A类证据)。(5)BRAF V600突变阳性的晚期NSCLC患者可使用达拉非尼联合曲美替尼185(2A类证据)。其他少见突变者可接受含铂双药化疗或参加临床试验。

10.3760/cma.j.cn112137-20220413-00795.F009 Ⅳ期非小细胞肺癌治疗流程图

注:PS为功能状态;SRS为立体定向放射外科;WBRT为全脑放疗;SABR为立体定向消融放疗;EGFR为表皮生长因子受体;ALK为间变性淋巴瘤激酶;TKI为酪氨酸激酶抑制剂;PD-L1为程序性死亡配体

2.非鳞状细胞癌驱动基因阴性患者的治疗:对于PD-L1表达阳性(≥1%)的患者,可单药使用帕博利珠单抗,但PD-L1高表达(≥50%)的患者获益更明显160186, 187(1类推荐)。对于PD-L1高表达(≥50%)的患者,可单药使用阿替利珠单抗188(2A类推荐)。(1)PS评分0~1分的患者:①推荐培美曲塞+铂类联合帕博利珠单抗化疗189(1类推荐证据);或培美曲塞+铂类+阿替利珠单抗(2A类推荐证据)190;或培美曲塞+卡铂+卡瑞利珠单抗191(2A类推荐证据);或培美曲塞+铂类+信迪利单抗192(2A类推荐证据);或培美曲塞+铂类+替雷利珠单抗(2A类推荐证据)193;或培美曲塞+卡铂+舒格利单抗(2A类推荐证据)194;也可使用含铂两药联合的方案化疗,化疗4~6个周期,铂类可选择卡铂或顺铂、洛铂150,与铂类联合使用的药物包括培美曲塞195, 196、紫杉醇197, 198、紫杉醇脂质体、紫杉醇聚合物胶束199、吉西他滨200, 201或多西他赛202(1类推荐证据);培美曲塞联合顺铂可以明显延长患者生存时间,且在疗效和降低不良反应方面优于吉西他滨联合顺铂(2A类推荐证据);对不适合铂类药物治疗的患者,可考虑非铂类两药联合方案化疗,包括吉西他滨联合长春瑞滨203 或吉西他滨联合多西他赛204, 205(1类推荐证据)。②对于无禁忌证患者可选择贝伐珠单抗206或重组人血管内皮抑素207,与化疗联用并进行维持治疗(1类或2A类推荐证据),紫杉醇及卡铂为推荐方案206(1类推荐证据),禁忌证包括中央型肺癌、近期有活动性出血、血小板降低、难以控制的高血压、肾病综合征、动脉血栓栓塞事件、充血性心力衰竭、抗凝治疗等。(2)PS评分2分的患者:推荐单药治疗。与最佳支持治疗相比,单药化疗可以延长患者生存时间并提高生命质量。可选的单药包括吉西他滨、长春瑞滨、紫杉醇、多西他赛、培美曲塞(2A类推荐证据)。(3)PS评分3~4分的患者:不建议使用细胞毒类药物化疗。此类患者一般不能从化疗中获益,建议采用最佳支持治疗或参加临床试验。(4)一线化疗4~6个周期达到疾病控制(完全缓解、部分缓解和稳定)且PS评分好、化疗耐受性好的患者可选择维持治疗。同药维持治疗的药物为帕博利珠单抗+培美曲塞189、阿替利珠单抗+培美曲塞190、卡瑞利珠单抗+培美曲塞191、信迪利单抗+培美曲塞192、替雷利珠单抗+培美曲塞 193、舒格利单抗+培美曲塞194、培美曲塞208, 209、吉西他滨210, 211或贝伐珠单抗212(1类推荐证据);换药维持治疗的药物为培美曲塞213(1类推荐证据)。

3.鳞状细胞癌驱动基因阴性患者的治疗:对于PD-L1表达阳性(≥1%)的患者,可单药使用帕博利珠单抗160186,但PD-L1高表达(≥50%)的患者获益更明显(1类推荐)。对于PD-L1高表达(≥50%)的患者,可单药使用阿替利珠单抗188(2A类推荐)。(1)PS评分0~1分的患者:推荐紫杉醇联合卡铂联合帕博利珠单抗化疗214(1类推荐证据),或紫杉醇联合卡铂联合替雷利珠单抗215(2A类推荐证据),或紫杉醇联合卡铂联合卡瑞利珠单抗216(2A类推荐证据),或吉西他滨联合铂类联合信迪利单抗217(2A类推荐证据);或紫杉醇联合卡铂联合舒格利单抗194(2A类推荐证据)。也可使用含铂两药联合的方案化疗,化疗4~6个周期,铂类可选择卡铂、顺铂、洛铂150或奈达铂218,与铂类联合使用的药物包括紫杉醇197, 198、紫杉醇脂质体、紫杉醇聚合物胶束199、吉西他滨200, 201或多西他赛202(1类推荐证据)或白蛋白紫杉醇219, 220;对不适合铂类药物治疗的患者,可考虑非铂类两药联合方案化疗,包括吉西他滨联合长春瑞滨203 或吉西他滨联合多西他赛204, 205。(2)PS评分2分的患者:推荐单药化疗。与最佳支持治疗相比,单药化疗可以延长生存时间并提高生活质量,可选的单药包括吉西他滨、长春瑞滨、紫杉醇、多西他赛(2A类推荐证据)。(3)PS评分3~4分的患者:建议采用最佳支持治疗或参加临床试验。(4)一线化疗4~6个周期达到疾病控制(完全缓解、部分缓解和稳定)且PS评分好、化疗耐受性好的患者可选择维持治疗。同药维持治疗的药物为帕博利珠单抗214、替雷利珠单抗215、卡瑞利珠单抗216、信迪利单抗217、舒格利单抗194、吉西他滨210(1类推荐证据),也可选择多西他赛(2A类推荐证据)。

4.鳞状细胞癌驱动基因阳性患者的治疗:(1)尽管晚期NSCLC中的腺癌EGFR突变率明显高于非腺癌,但在非腺癌中检测的EGFR突变结果支持对所有NSCLC患者进行EGFR检测221。推荐对不吸烟、小标本或混合型的鳞状细胞癌患者进行EGFR、ALK、ROS1基因检测(2A类推荐证据)。(2)鳞癌驱动基因阳性患者的治疗参照非鳞状细胞癌驱动基因阳性患者治疗方法。

(二)二线及后线治疗

首先积极鼓励后线患者参加新药临床试验。

1.非鳞状细胞癌驱动基因阳性患者的治疗:(1)EGFR驱动基因阳性的Ⅳ期非鳞状细胞癌患者:如果一线未使用EGFR-TKI,二线治疗时建议首先使用EGFR-TKI71(1类推荐证据)。一线使用EGFR-TKI后疾病进展患者,根据进展类型分为寡进展型、广泛进展型。①若为寡进展型,推荐继续原EGFR-TKI治疗±局部治疗222(2A类推荐证据)。治疗后再次进展,推荐二次活组织检查检测T790M突变状态。②若为广泛进展型,一代/二代TKI耐药后推荐二次活组织检查检测T790M突变状态,T790M阳性者,推荐奥希替尼223或阿美替尼224、伏美替尼225治疗(1类推荐证据),T790M阴性者推荐含铂双药化疗联合或不联合贝伐珠单抗(非鳞状细胞癌患者)223(1类推荐证据)。若未进行T790M状态检测,推荐含铂双药化疗联合或不联合贝伐珠单抗(非鳞状细胞癌患者)。三线PS评分0~2分可接受单药化疗或在无禁忌证的情况下推荐使用安罗替尼226(2A类推荐证据)。(2)ALK融合基因阳性的Ⅳ期非鳞状细胞癌患者:如果一线未使用ALK-TKI,二线治疗时建议首先使用ALK-TKI,也可使用含铂双药化疗181(1类推荐证据)。一线克唑替尼治疗出现疾病进展者,若为寡进展推荐继续口服克唑替尼±局部治疗227, 228(2A类推荐证据);若为快速进展者,推荐阿来替尼229或塞瑞替尼230或恩沙替尼231(1类推荐证据)或布格替尼232(2A类证据)治疗,也可接受含铂双药化疗233, 234(2A类推荐证据)。在无禁忌证的情况下,三线可使用安罗替尼226(2A类推荐证据)。(3)ROS1基因重排阳性的Ⅳ期非鳞状细胞癌患者:如果一线未使用克唑替尼,二线治疗时建议首先使用克唑替尼183(2A类推荐证据)。若一线接受克唑替尼治疗后进展者,建议接受含铂双药化疗(2A类推荐证据)。在无禁忌证的情况下,三线推荐使用安罗替尼226(2A类推荐证据)。(4)RET融合基因阳性的Ⅳ期非鳞状细胞癌患者铂类化疗进展后可使用普拉替尼235。(5)MET14外显子跳突的晚期非鳞状细胞癌患者含铂化疗后疾病进展可使用赛沃替尼184

2.非鳞状细胞癌驱动基因阴性患者的治疗:PS评分0~2分驱动基因阴性非鳞状细胞癌患者一线进展后,如未接受过免疫治疗,推荐二线治疗使用纳武单抗82236(1类推荐证据)、或替雷利珠单抗(2A类推荐证据)。PS评分0~2分驱动基因阴性非鳞状细胞癌患者一线进展后也可使用多西他赛237(1类推荐证据)或培美曲塞196(2A类推荐证据)单药化疗。对于PS评分>2分的患者,二线建议最佳支持治疗。若前期未使用培美曲塞或多西他赛单药治疗者,三线可接受培美曲塞或多西他赛单药治疗(2A类推荐证据),或在无禁忌证的情况下推荐使用安罗替尼226(2A类推荐证据),后线建议最佳支持治疗。

3.鳞状细胞癌驱动基因阳性患者的治疗:对于EGFR敏感基因突变的Ⅳ期鳞状细胞癌患者,如果一线未使用EGFR-TKI,二线治疗时建议首先使用EGFR-TKI(2B类推荐证据)。若一线使用EGFR-TKI后疾病进展,参照非鳞状细胞癌驱动基因阳性患者的治疗。三线建议单药化疗,或在无禁忌证的情况下推荐使用安罗替尼226(2A类推荐证据)。

4.鳞状细胞癌驱动基因阴性患者的治疗:PS评分0~2分驱动基因阴性鳞状细胞癌患者一线进展后,如果未接受过免疫治疗,推荐二线治疗使用纳武单抗236238(1类推荐证据)、或替雷利珠单抗(2A类推荐证据)。PS评分0~2分驱动基因阴性的鳞状细胞癌患者一线进展后也可使用多西他赛单药化疗237(1类推荐证据)。对于PS评分>2分的患者,二线及后线建议最佳支持治疗。三线在无禁忌证的情况下推荐使用安罗替尼237(2A类推荐证据)。

对于接受中、高发热性中性粒细胞减少风险化疗方案的患者,可考虑预防性使用重组人粒细胞集落刺激因子或聚乙二醇化重组人粒细胞集落刺激因子239

四、寡病灶转移的Ⅳ期NSCLC患者的治疗

寡转移分为同时性寡转移和异时性寡转移。同时性寡转移是指初次确诊时已经出现的寡转移灶,异时性寡转移是指经过治疗后一段时间出现的寡转移灶。

NSCLC寡转移患者经有效的全身治疗后,采用放疗、手术等局部治疗手段可以带来临床获益,多学科综合治疗策略可以使肺癌寡转移患者获益最大化222240。肺部手术前存在孤立性脏器(脑、肾上腺或骨)转移者,应根据肺部病变分期原则进行手术或放疗和术后治疗。孤立性脏器转移灶的治疗按照部位进行:(1)脑或肾上腺转移者积极行局部治疗,包括手术切除脑或肾上腺转移瘤,或者脑或肾上腺转移瘤行常规放疗/SBRT241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256(2A类推荐证据)。若患者已合并明显的中枢神经系统症状,影像学检查提示有脑转移瘤压迫水肿显著或中线结构偏移严重等情况,建议先行脑转移瘤手术解除颅脑问题,择期再行肺原发瘤手术257, 258(2A类推荐证据)。(2)骨转移者接受放疗联合双磷酸盐治疗。对于承重骨转移推荐转移灶手术+放疗255, 256259, 260, 261, 262(2A类推荐证据)。

肺部手术后出现孤立性脏器(脑、肾上腺或骨)转移的,应根据孤立性脏器转移灶部位进行治疗。(1)脑转移或肾上腺转移者积极行局部治疗,包括手术切除脑或肾上腺转移瘤,或脑或肾上腺转移瘤行常规放疗/SBRT,根据情况联合全身治疗257, 258263, 264。(2A类推荐证据)。(2)骨转移者接受放疗联合双磷酸盐治疗。对于承重骨转移患者推荐转移灶手术+放疗,根据情况联合全身治疗261, 262(2A类推荐证据)。

总之,对于寡转移晚期NSCLC患者,在全身规范治疗基础上,应采取积极的局部治疗,使患者生存获益达到最大化。

五、SCLC和LCNEC的治疗 (一)SCLC的治疗

1.局限期SCLC患者的治疗(图10):(1)可手术局限期SCLC患者(T1~2N0)的治疗:经系统的分期检查后提示无纵隔淋巴结转移的T1~2N0的患者,推荐根治性手术,术式为肺叶切除术+肺门、纵隔淋巴结清扫术265(2A类推荐证据);术后病理提示N0的患者推荐辅助化疗,方案包括依托泊苷+顺铂266、依托泊苷+卡铂267(2A类推荐证据);术后病理提示N1和N2的患者,推荐行辅助化疗合并胸部放疗268, 269(2A类推荐证据),同步或序贯均可。辅助化疗方案推荐依托泊苷+顺铂(1类推荐证据)。可以根据患者的实际情况决定是否行预防性脑放疗(prophylactic cranial irradiation,PCI)(1类推荐证据)。(2)不可手术局限期SCLC患者(超过T1~2N0或不能手术的T1~2N0)的治疗:① PS评分0~2分的患者:化疗同步胸部放疗为标准治疗270, 271, 272, 273, 274, 275, 276(1类推荐证据)。化疗方案为依托泊苷+顺铂277(1类推荐证据)和依托泊苷+卡铂278(1类推荐证据)。胸部放疗应在化疗的第1~2个周期尽早介入279, 280。如果患者不能耐受,也可行序贯化放疗。放疗最佳剂量和方案尚未确定,推荐胸部放疗总剂量为45 Gy,1.5 Gy/次,2次/d,3周;或总剂量为60~70 Gy,1.8~2.0 Gy/次,1次/d,6~8周。对于特殊的临床情况,如巨大肿瘤、合并肺功能损害、阻塞性肺不张等,可考虑2个周期化疗后进行放疗。放化疗后疗效达完全缓解或部分缓解的患者,可考虑行PCI281(2A类推荐证据)。②美国东部肿瘤协作组(Eastern Cooperative Oncology Group,ECOG)PS评分3~4分(由SCLC所致)患者:建议应充分综合考虑各种因素,谨慎选择治疗方案,如化疗(单药方案或减量联合方案),如果治疗后PS评分能达到2分以下,可考虑给予同步或序贯放疗,如果PS评分仍无法恢复至2分以下,则根据具体情况决定是否采用胸部放疗。放化疗后疗效达完全缓解或部分缓解的患者,可考虑行PCI(2A类推荐证据)。③ECOG PS评分3~4分(NSCLC所致)患者:推荐最佳支持治疗。

10.3760/cma.j.cn112137-20220413-00795.F010 局限期小细胞肺癌(SCLC)治疗流程图

注:PS为功能状态

2.广泛期SCLC患者的一线治疗(图11):(1)无症状或无脑转移的广泛期SCLC患者的治疗:①ECOG PS评分0~2分患者:推荐依托泊苷和卡铂联合阿替利珠单抗282 或者依托泊苷和铂类联合度伐利尤单抗283(1类推荐证据)或化疗。ECOG PS评分3~4分(由SCLC所致),推荐化疗。方案包括EP方案(依托泊苷+顺铂)284(1类推荐证据)、EC方案(依托泊苷+卡铂)285(1类推荐证据)、IP方案(伊立替康+顺铂)286(1类推荐证据)、IC方案(伊立替康+卡铂)286(1类推荐证据)、依托泊苷+洛铂287(2A类推荐证据)。化疗后疗效达完全缓解或部分缓解的患者,如果远处转移灶得到控制,且一般状态较好,可以加用胸部放疗288, 289, 290, 291(2A类推荐证据);酌情谨慎选择PCI292, 293(2A类推荐证据)。②ECOG PS评分3~4分(非SCLC所致)患者:推荐最佳支持治疗。(2)局部症状的广泛期SCLC患者的治疗:①上腔静脉综合征:临床症状严重者推荐先放疗后化疗(2A类推荐证据);临床症状较轻者推荐先化疗后放疗(2A类推荐证据),同时给予吸氧、利尿、镇静、止痛等对症治疗。局部放疗的放射野应包括原发灶、整个纵隔区及两锁骨上区,要将上腔静脉包括在照射野内;放疗初期可能出现局部水肿加重,必要时可使用激素和利尿剂辅助治疗;首次化疗应具有冲击性。放化疗结束后,根据患者具体情况决定是否行PCI(2A类推荐证据)。②脊髓压迫症:如无特殊情况,患者应首先接受局部放疗,控制压迫症状,并给予EP方案、EC方案、IP方案或IC方案化疗(2A类推荐证据)。由于脊髓压迫症的患者生存时间较短,生命质量较差,所以对于胸部放疗和PCI的选择需综合考量多方因素,慎重选择(如完全缓解或部分缓解的患者可以放疗),但通常不建议手术减压治疗。③骨转移:推荐EP方案、EC方案、IP方案或IC方案化疗+局部姑息外照射放疗±双磷酸盐治疗(2A类推荐证据);骨折高危患者可采取骨科固定。④阻塞性肺不张:推荐EP方案、EC方案、IP方案或IC方案化疗+胸部放疗(2A类推荐证据)。2个周期化疗后进行放疗是合理的,其易于明确病变范围,缩小照射体积,使患者能够耐受和完成放疗。(3)脑转移患者的治疗:①无症状脑转移患者:全身化疗结束后接受全脑放疗(2A类推荐证据),治疗后疗效达完全缓解或部分缓解的患者,可给予胸部放疗(2A类推荐证据)。②有症状脑转移患者:推荐全脑放疗与化疗序贯进行(2A类推荐证据),治疗后疗效达完全缓解或部分缓解的患者,可给予胸部放疗(2A类推荐证据)。

10.3760/cma.j.cn112137-20220413-00795.F011 广泛期小细胞肺癌(SCLC)治疗流程图

注:PS为功能状态

3.SCLC患者的PCI:制定PCI的治疗决策时应与患者和家属充分沟通,根据患者的具体情况,权衡利弊后确定。对于完全切除的局限期SCLC,根据实际情况决定是否接受PCI治疗(2A类推荐证据);对于获得完全缓解、部分缓解的局限期SCLC,推荐PCI(2A类推荐证据);对于广泛期SCLC,酌情考虑PCI(2A类推荐证据)。不推荐年龄>65岁、有严重的合并症、PS评分>2分、神经认知功能受损的患者行PCI293, 294。PCI应在化放疗结束后3周左右时开始,PCI之前应行脑增强MRI检查,如证实无脑转移,可开始PCI。PCI的剂量为25 Gy,2.5 Gy/次281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292295, 296, 297

4.二线治疗(图12):(1)一线治疗后6个月内复发的ECOG PS评分0~2分患者:推荐选择静脉或口服拓扑替康化疗298, 299, 300(2A类推荐证据),也可推荐患者参加临床试验或选用以下药物,包括伊立替康(2A类推荐证据)、紫杉醇(2A类推荐证据)、多西他赛(2A类推荐证据)、长春瑞滨(2A类推荐证据)、吉西他滨(2A类推荐证据)、替莫唑胺(2A类推荐证据)、环磷酰胺联合多柔比星及长春新碱(2A类推荐证据)。ECOG PS评分2分的患者可酌情减量或应用生长因子支持治疗。(2)一线治疗后6个月以上复发患者:选用原一线治疗方案。

10.3760/cma.j.cn112137-20220413-00795.F012 复发或进展小细胞肺癌(SCLC)治疗流程图

注:PS为功能状态

5.三线治疗:推荐安罗替尼口服301(1类推荐证据)。

6.老年SCLC患者的治疗:对于老年SCLC患者,不能仅根据年龄确定治疗方案,根据机体功能状态指导治疗更有意义。如果老年患者有日常生活自理能力、体力状况良好、器官功能相对较好,应当接受标准联合化疗(如有指征也可放疗),但因老年患者可能出现骨髓抑制、乏力和器官功能受损的概率更高,所以在治疗过程中应严密观察,以避免过高的风险。

(二)肺LCNEC患者的治疗

肺LCNEC的发病率低,占肺癌的3%302,目前尚无统一的治疗标准,推荐参考非鳞状NSCLC的治疗原则,内科治疗可采用依托泊苷+铂类方案治疗303(2B类推荐证据)。

第六部分:随访 (一)Ⅰ~Ⅱ期(初始治疗为外科手术±化疗或SBRT治疗后)和可手术切除ⅢA期NSCLC R0切除术后,无临床症状或症状稳定者<sup>[<xref ref-type="bibr" rid="R52">52</xref>,<xref ref-type="bibr" rid="R104">104</xref>,<xref ref-type="bibr" rid="R304">304</xref>, <xref ref-type="bibr" rid="R305">305</xref>, <xref ref-type="bibr" rid="R306">306</xref>, <xref ref-type="bibr" rid="R307">307</xref>, <xref ref-type="bibr" rid="R308">308</xref>, <xref ref-type="bibr" rid="R309">309</xref>, <xref ref-type="bibr" rid="R310">310</xref>, <xref ref-type="bibr" rid="R311">311</xref>, <xref ref-type="bibr" rid="R312">312</xref>]</sup>

1.前3年:3~6个月随访1次;吸烟情况评估(鼓励患者戒烟);病史、体格检查、胸部CT±增强扫描。

2.第4、5年:1年随访1次;吸烟情况评估(鼓励患者戒烟);病史、体格检查、胸部CT±增强扫描。

3. 5年以上:1年随访1次;吸烟情况评估(鼓励患者戒烟);病史、体格检查;低剂量非增强胸部CT(2B类推荐证据)。

(二)局部晚期NSCLC(不可手术的ⅢA期和ⅢB期)放化疗后,无临床症状或症状稳定者<sup>[<xref ref-type="bibr" rid="R304">304</xref>,<xref ref-type="bibr" rid="R307">307</xref>,<xref ref-type="bibr" rid="R313">313</xref>, <xref ref-type="bibr" rid="R314">314</xref>, <xref ref-type="bibr" rid="R315">315</xref>, <xref ref-type="bibr" rid="R316">316</xref>, <xref ref-type="bibr" rid="R317">317</xref>, <xref ref-type="bibr" rid="R318">318</xref>, <xref ref-type="bibr" rid="R319">319</xref>, <xref ref-type="bibr" rid="R320">320</xref>, <xref ref-type="bibr" rid="R321">321</xref>, <xref ref-type="bibr" rid="R322">322</xref>, <xref ref-type="bibr" rid="R323">323</xref>, <xref ref-type="bibr" rid="R324">324</xref>, <xref ref-type="bibr" rid="R325">325</xref>, <xref ref-type="bibr" rid="R326">326</xref>]</sup>

1.无临床症状或症状稳定者:每8~12周随诊1次;病史、体格检查、胸腹部增强CT;参加临床试验者,随访应遵循临床研究方案进行。

2.临床出现新的症状和(或)症状加重者:立即随诊,是否行CT、MRI等检查由临床医师决定(2B类推荐证据)。

(三)Ⅳ期NSCLC患者全身治疗结束后<sup>[<xref ref-type="bibr" rid="R52">52</xref>,<xref ref-type="bibr" rid="R104">104</xref>,<xref ref-type="bibr" rid="R304">304</xref>, <xref ref-type="bibr" rid="R305">305</xref>, <xref ref-type="bibr" rid="R306">306</xref>, <xref ref-type="bibr" rid="R307">307</xref>, <xref ref-type="bibr" rid="R308">308</xref>, <xref ref-type="bibr" rid="R309">309</xref>, <xref ref-type="bibr" rid="R310">310</xref>, <xref ref-type="bibr" rid="R311">311</xref>, <xref ref-type="bibr" rid="R312">312</xref>, <xref ref-type="bibr" rid="R313">313</xref>]</sup>

1.无临床症状或症状稳定者:每8~12周随诊1次;病史、体格检查、胸腹部增强CT;伴有脑、骨转移者需要复查脑MRI和全身骨扫描;参加临床试验者,随访应遵循临床研究方案进行。

2.临床出现新的症状和(或)症状加重者:立即随诊,是否行CT、MRI检查由临床医师决定(2B类推荐证据)。

本指南强调了肺癌筛查、诊断、病理、治疗和随访等诊治措施在国内应用的规范性及可及性,以国家批准的应用指征为原则及准绳,以国内实际可应用的药品为基础,结合国际会议上发表的中国专家基于中国患者的最新肺癌诊疗相关基础研究报告以及中国肺癌领域专家在过去1年中取得的学术进展,在2021版本基础上进行更新327,最终形成2022版肺癌临床诊疗指南。

本指南制定专家委员会名单

顾问专家(按姓氏汉语拼音排序)赫捷(国家癌症中心 国家肿瘤临床医学研究中心 中国医学科学院北京协和医学院肿瘤医院胸外科);孙燕(国家癌症中心 国家肿瘤临床医学研究中心 中国医学科学院北京协和医学院肿瘤医院肿瘤内科);于金明(山东省肿瘤医院放疗科);王辰(中国医学科学院北京协和医学院);吴一龙(广东省人民医院肺癌研究所)

名誉主任委员:徐惠绵(中国医科大学附属第一医院肿瘤外科)

主任委员(按姓氏汉语拼音排序):高树庚(国家癌症中心 国家肿瘤临床医学研究中心 中国医学科学院北京协和医学院肿瘤医院胸外科);韩宝惠(上海市胸科医院呼吸内科);林冬梅(北京大学肿瘤医院病理科);邢力刚(山东省肿瘤医院放疗科)

委员(按姓氏汉语拼音排序):白冲(上海长海医院呼吸与危重症医学科);白春梅(北京协和医院肿瘤内科);白莉(陆军军医大学附属新桥医院呼吸与危重症医学科);毕楠(国家癌症中心 国家肿瘤临床医学研究中心 中国医学科学院北京协和医学院肿瘤医院放射治疗科);操乐杰(安徽省立医院呼吸内科);常建华(中国医学科学院肿瘤医院深圳医院肿瘤内科);陈宏(哈尔滨医科大学附属第二医院呼吸内科);陈良安(解放军总医院呼吸科);程颖(吉林省肿瘤医院肿瘤内科);储天晴(上海市胸科医院呼吸内科);丁翠敏(河北医科大学第四医院呼吸内科);范云(浙江省肿瘤医院肿瘤内科);方文涛(上海市胸科医院胸外科);冯继锋(江苏省肿瘤医院肿瘤内科);冯瑞娥(北京协和医院病理科);傅小龙(上海市胸科医院放疗科);高蓓莉(上海交通大学医学院附属瑞金医院呼吸与危重症医学科);高俊珍(内蒙古医科大学附属医院呼吸与危重症医学科);郭其森(山东省肿瘤医院呼吸内科);韩宝惠(上海市胸科医院呼吸内科);韩一平(海军军医大学附属长海医院呼吸与危重症医学科);韩昱晨(上海市胸科医院病理科);何勇(陆军特色医学中心大坪医院呼吸内科);洪群英(复旦大学附属中山医院呼吸内科);胡成平(湘雅医院呼吸内科);胡洁(复旦大学附属中山医院呼吸内科);黄建安(苏州大学附属第一医院呼吸与危重症医学科);焦顺昌(解放军总医院肿瘤内科);金阳(华中科技大学同济医学院附属协和医院呼吸与危重症医学科);李函玥(上海市胸科医院肿瘤外科);李鹤成(上海交通大学医学院附属瑞金医院胸外科);李凯(天津市肿瘤医院肿瘤内科);李为民(四川大学华西医院呼吸与危重症医学科);李文峰(温州医学院附属第一医院放化疗科);李晓琳(山东省肿瘤医院放疗科);李媛(复旦大学附属肿瘤医院病理科);刘丹(四川大学华西医院呼吸与危重症医学科);刘晓晴(解放军总医院第五医学中心肺部肿瘤科);刘怡茜(江苏省人民医院肿瘤科);柳菁菁(吉林省肿瘤医院肿瘤内科);茅乃权(广西医科大学附属肿瘤医院胸瘤外科);钱芳菲(上海市胸科医院呼吸内科);邱斌(国家癌症中心 国家肿瘤临床医学研究中心 中国医学科学院北京协和医学院肿瘤医院胸外科);任丽(天津市肿瘤医院检验科);邵晋晨(上海市胸科医院病理科);师晓华(北京协和医院病理科);施敏骅(苏州大学附属第二医院呼吸与危重症医学科);束永前(江苏省人民医院肿瘤科);宋霞(山西省肿瘤医院呼吸内科);宋秀宇(天津市肿瘤医院分子影像及核医学诊疗科);宋勇(东部战区总医院呼吸与危重症医学科);孙冰生(天津市肿瘤医院肺部肿瘤科);孙耕耘(安徽医科大学第一附属医院呼吸与危重症医学科);覃寿明(广西医科大学第一附属医院呼吸内科);唐华平(青岛市市立医院呼吸与危重症医学科);滕昊骅(上海市胸科医院病理科);遆新宇(空军军医大学第一附属医院呼吸内科);田攀文(四川大学华西医院呼吸与危重症医学科);庹培昱(天津市肿瘤医院分子影像及核医学诊疗科);王洁(国家癌症中心 国家肿瘤临床医学研究中心 中国医学科学院北京协和医学院肿瘤医院肿瘤内科);王晶(天津市肿瘤医院肺部肿瘤科);王静(郑州大学第一附属医院呼吸与危重症医学科);王凯(浙江大学医学院附属第四医院呼吸内科);王启鸣(郑州大学附属肿瘤医院/河南省肿瘤医院呼吸内科);王瑞(上海市胸科医院胸外科);王晓平(中日友好医院呼吸与危重症医学科);吴凤英(上海市肺科医院肿瘤科);吴世凯(北京大学第一医院肿瘤化疗科);肖建宇(天津市肿瘤医院放射科);谢宝松(福建省立医院呼吸与危重症医学科);邢力刚(山东省肿瘤医院放疗科);徐淑凤(秦皇岛市第一医院呼吸与危重症医学科);徐文贵(天津市肿瘤医院分子影像及核医学诊疗科);徐小嫚(中国医科大学附属盛京医院第一呼吸与危重症医学科);徐兴祥(江苏省苏北人民医院呼吸内科);杨农(湖南省肿瘤医院肺胃肠肿瘤内科);杨震(解放军总医院呼吸科);姚烽(上海市胸科医院胸外科);于壮(青岛大学附属医院肿瘤科);袁智勇(天津市肿瘤医院放疗科);张帆(国家癌症中心 国家肿瘤临床医学研究中心 中国医学科学院北京协和医学院肿瘤医院胸外科);张国俊(郑州大学第一附属医院呼吸内科);张艰(空军军医大学西京医院呼吸科);张捷(吉林大学第二医院呼吸与危重症医学科);张力(北京协和医院呼吸与危重症医学科);张琴(上海市胸科医院放疗科);张新(复旦大学附属中山医院呼吸科);赵亮(国家癌症中心 国家肿瘤临床医学研究中心 中国医学科学院北京协和医学院肿瘤医院胸外科);赵微(解放军总医院呼吸科);钟华(上海市胸科医院呼吸内科);钟润波(上海市胸科医院呼吸内科);周彩存(上海市肺科医院肿瘤科);周德俊(天津市肿瘤医院内镜诊疗科);周建英(浙江大学医学院附属第一医院呼吸内科);周向东(陆军军医大学第一附属医院呼吸与危重症医学科);周燕斌(中山大学附属第一医院呼吸与危重症医学科);朱波(陆军军医大学第二附属医院肿瘤科);庄武(福建省肿瘤医院胸部肿瘤内科)

学术秘书(按姓氏汉语拼音排序):王姝元(上海市胸科医院呼吸内科);杨婷婷(中华医学会杂志社)

执笔人:钟润波(上海市胸科医院呼吸内科)

参考文献
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