脑转移瘤X线立体定向放射治疗的疗效及影响因素
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1.华南肿瘤学国家重点实验室,广东广州510060
2.中山大学肿瘤防治中心
放射治疗科,
广东广州510060
1.StateKeyLaboratoryof
OncologyinSouthChina,
Guangzhou,Guangdong510060,P.R.China
2.DepartmentofRadiation
Oncology,
SunYat-senUniversityCancer
Center,
Guangzhou,Guangdong510060,P.R.China
通讯作者:吴少雄
Correspondenceto:Shao-XiongWuTel.:86.20.87343384
Fax:86.20.87342025
Email:wushaox@mail.sysu.edu
.cn
收稿日期:2009-08-18
接受日期:2009-09-02《癌症》ChineseJournalofCancer,2010,29(2):217-222
·临床研究·
[Abstract]BackgroundandObjective:X-raystereotacticradiotherapy(SRT)
isoneoftheeffectivetreatmentsforbrainmetastases(BM).Thisstudywas
toevaluatetheefficacyofSRTonBM,andinvestigateprognosticfactors.
Methods:BetweenJuly1999andDecember2004,atotalof122intracranial
lesionsin78patientswithBMweretreatedusingSRTinourcenter.Forty-
ninepatientshadasolitarylesionand29hadmultiple(2-6)lesions.The
medianSRTdosewas15Gy(11-24Gy)insinglefractionfor38lesions,
and24Gy(11-40Gy)in2-6fractionsfor84lesions.SRTwascombined
withwholebrainradiotherapy(WBRT)of30-40Gyfor39patients.
Progression-freesurvival(PFS)andoverallsurvival(OS)wereestimatedby
Kaplan-Meiermethod.Univariateandmultivariateanalyseswereperformed
bythelog-ranktestandCoxmodel,respectively.Results:Themedian
survivaltimewas12.9months(1.7-77.4months).The1-yearintracranial
PFSratewas87.4%.The1-and2-yearOSrateswere53.9%and25.8%,
respectively.Univariateanalysisshowedthatthe1-yearOSrateswere
significantlyhigherinthepatientswithpretreatmentKPSof≥70,
extracraniallesionscontrolledandSRTcombinedwithWBRTthaninthose
withKPSof<70(60.7%vs.29.4%,P=0.002),extracraniallesions
uncontrolled(69%vs.44.9%,P=0.005)andSRTalone(64.1%vs.
43.4%,P=0.03).ThebenefitoftreatingwithWBRTincombinationwas
mainlyachievedinpatientswithextracraniallesionscontrolledorwithmore
thanoneintracraniallesion.MultivariateanalysisshowedthatKPSscoreand
statusofextracraniallesionswereindependentprognosticfactorsforOS.
Conclusions:SRTisaneffectiveandsafemodalityforBM.SRTcombined
withWBRTmayprolongthesurvivaltimeforpatientswithextracraniallesions
controlledormultipleintracraniallesions.Independentprognosticfactorsfor
OSareKPSscoreandstatusofextracraniallesions.
Keywords:Brainmetastasis,effect,prognostic,stereotacticradiotherapy
【摘要】背景与目的:X线立体定向放射治疗(X-raystereotacticradiotherapy,
SRT)是治疗脑转移瘤的有效方法之一,该研究意在评价脑转移瘤患者SRT的疗
效以及影响预后的因素。方法:自1999年7月至2004年12月止,78例脑转移瘤
患者在本中心接受SRT方式治疗。其中,49例为单发病灶,29例为多发(2~6个)
病灶,总病灶数为122个。38个病灶采用SRT单次治疗,中位处方剂量为15Gy
(11~24Gy)。84个病灶采用SRT分次(2~6次)治疗,中位处方剂量为24Gy(11~
40Gy)。39例SRT联合全脑放疗30~40Gy。无进展生存率(progression-free
survival,PFS)和总生存率(overallsurvival,OS)分析采用Kaplan-Meier法,单因素
脑转移瘤X线立体定向放射治疗的疗效及影响因素
魏微1,2,邓美玲1,2,吴少雄1,2,曾智帆1,2,李凤岩1,2,
王汉渝1,2,包勇1,2,高远红1,2,陈立新1,2
EfficacyofX-raystereotacticradiotherapyonbrainmetastasesand
prognosticanalysis
WeiWei1,2,Mei-LingDeng1,2,Shao-XiongWu1,2,Zhi-FanZeng1,2,Feng-YanLi1,2,
Han-YuWang1,2,YongBao1,2,Yuan-HongGao1,2,Li-XinChen1,2
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