鼻咽癌AJCC-UICC第8版临床分期(2)

发布时间:2021-06-11

鼻咽癌2016年新版国际分期

198 SystemsEngineeringandEngineeringManagement,CityUniversityofHongKong(ChoiHCW);Departmentof

DiagnosticRadiology,PamelaYoudeNethersoleEasternHospital,HongKong,China(KanWK);DepartmentofBiostatistics,PrincessMargaretCancerCentre,Canada(WeiX);DepartmentofRadiationOncology,StanfordUniversity,USA(LeQT);DepartmentofClinicalRadiology,UniversityofCaliforniaS,anFrancisco,USA(GlastonburyCM);DepartmnteofMedicine(Oncology),StanfordCancerInstitute,StanfordUniversity,USA(ColevasD);DepartmentofHeadandNeckSurgery,UniversityofTexasMDAndersonCancerCenter,USA(WeberRS);DepartmentofHeadandNeckSurgery,MemorialSloanKetteringCancerCenter,USA(ShahJP);DepartmentofClinicalOncology,UniversityofHongKongandClinicalOncologyCenter,China(LeeAWM)

Correspondingauthor:AnneW.M.Lee,Email:awmlee@khu.hk  【Abstract】 Objective Anaccuratestagingsystemiscrucialforcancermanagement.Withthedevelopmentofcancerstagingsystemsandtherapeuticmethods,theapplicabilityandimprovementofstagingsystemsshouldbeevaluatedconstantly.Methods Theclinicaldataof1609nasopharyngealcarcinomapatientswithoutmetastasisatinitialdiagnosis,whowereadmittedtotwotumorcentersinHongKongandMainlandChinaandreceivedintensity-modulatedradiotherapy(IMRT),wereanalyzedretrospectivelybased

th

onthe7editionoftheAmericanJointCommitteeonCancer(AJCC)orInternationalUnionAgainstCancer(UICC)stagingsystem,andallthepatientsunderwentmagneticresonanceimaging(MRI)beforetreatment.Results AmongtheT3/T4patientswithoutinvolvementofotheranatomicstructures,overallsurvival(OS)showednosignificantdifferencesbetweenthepatientswithmasticatorspace(medialpterygoidmuscleand/orlateralpterygoidmuscle)involvement,prevertebralmuscleinvolvement,andparapharyngealspaceinvolvement.TheOSwassimilarbetweenthepatientswithextensivesofttissue(softtissuesotherthanthestructuresmentionedabove)involvementandthosewithintracranialinvolvementorcranialnerveinvolvement.Only2%ofthepatientshadlymphnodemetastasis>6cmabovethesupraclavicularfossa(SCF),withanOSsimilartothatofthepatientswithlowercervicallymphnodemetastasis.ReplacingSCFwiththelowerneck(belowthecaudalborderofthecricoidcartilage)didnotaffecttheriskdifferencebetweendifferentNstages.WiththeproposedTandNstagingsystems,theOSshowednosignificantdifferencesbetweenT4N0-Conclusions AfterareviewbyAJCC/UICCstagingsystem2andT1-4N3patients.

th

preparatorycommittees,thechangesrecommendedforthe8editionincludechangingmedialpterygoidmuscleorlateralpterygoidmuscleinvolvementfromT4toT2,addingprevertebralmuscleinvolvementtoT2stage,replacingSCFwiththelowerneckandcombiningthiswithamaximumlymphnodediameterof>6cmasN3stage,andintegratingT4andN3asstageⅠVA.Thesechangesresultinabetterriskdifferencebetweenadjacentstagesandachievetheoptimalbalancebetweenclinicalpracticabilityandglobalapplicability.  【Keywords】 Nasopharyngealneoplasms/radiotherapy; Prognosis; TNMstagingsystem  本文首次发表在Cancer,2016,122(4):546-558.

  准确的分期系统对恶性肿瘤的预后预测、指导不同亚组给予个体化治疗和不同放疗中心疗效评价等方面起关键作用。预后因素随着分期研究和治疗方法的进展而变化,因此分期系统验证是保证其持续稳定发展和进一步更新的基础。

鼻咽癌的生物学行为和治疗方法与其他头颈癌不同,AJCC/UICC的TNM分期系统在第5版发生了重大变化

[1-2]

的定义,而不是作为颞下窝的替代。另一变化是将肿瘤侵犯鼻腔和(或)口咽但无咽旁侵犯(原为T2a期)降为T1期为N1期

[11]

[9-10]

,并明确定义单双侧咽后淋巴结

过去20年鼻咽癌的治疗发生了革命性变化。

先进的影像诊断方法可以准确界定肿瘤侵犯范围并早期发现隐匿性转移。从二维常规放疗发展到三维适形放疗和调强放疗技术(IMRT),在提高肿瘤靶区照射剂量的同时保护周围正常组织。化疗的联合应用进一步改善了肿瘤控制率和治愈率,尤其是局部晚期鼻咽癌。因此,新分期标准是基于上述现代疗法的结果

[12]

。来自亚洲的鼻咽癌高发地区大样

[3-4]

本回顾性材料,将AJCC/UICC第4版和Ho′s分期系统合并,发展成为新的分期标准

。这是鼻咽癌

分期史上里程碑的发展,来自鼻咽癌高发区和非高发地区的研究一致认为,该分期系统较之前的版本有了很大的进步。第6版分期变化不大,用咀嚼肌间隙取代颞下窝(T4期标准之一),虽然分期手册描述了咀嚼肌间隙的概念,但并未给予统一公认的定义

[5-6]

。AJCC/UICC第8版的建议在广泛采

纳国际多学科专家的一致意见前,经过了系统的文

献分析以及利用最近临床数据对新分期修订建议进行验证的准备过程。在对分期修订建议的文献分析和归纳后,有以下4个问题最为突出:(1)咀嚼肌间隙的预后作用存在争议

[13-18]

。现行的第7版分期

[7-8]

,两种概念均保留在

T4期标准,咀嚼肌间隙采用了经典解剖学教科书上

;(2)椎前肌侵犯对预

鼻咽癌AJCC-UICC第8版临床分期(2).doc 将本文的Word文档下载到电脑

精彩图片

热门精选

大家正在看

× 游客快捷下载通道(下载后可以自由复制和排版)

限时特价:7 元/份 原价:20元

支付方式:

开通VIP包月会员 特价:29元/月

注:下载文档有可能“只有目录或者内容不全”等情况,请下载之前注意辨别,如果您已付费且无法下载或内容有问题,请联系我们协助你处理。
微信:fanwen365 QQ:370150219