J Thorac Cardiov Sur:多原发磷屑样生长型肺腺癌主病灶切除极为重要

2017-11-23 萧弈 CardiothoracicSurger

肺部多发磨玻璃影(GGO)是近几年临床医师讨论的焦点,对于含有主病灶的患者是否应接受局部治疗目前并不明确。

肺部多发磨玻璃影(GGO)是近几年临床医师讨论的焦点,对于含有主病灶的患者是否应接受局部治疗目前并不明确。对于接受切除主病灶的患者剩余肺部病灶是否需要处理,如何处理,是否会影响患者的预后一直困扰着我们。鉴于此,来自美国的Rebecca W.Gao教授等开展了一项研究试图分析这部分患者的预后问题,并确定未切除GGO进展的危险因素。研究结果发表在近期的JTCVS杂志上。

该研究回顾性分析70例接受根治性切除,磷屑样生长型,pN0肺腺癌患者,其中至少含有1个GGO。使用logistic回归分析确定与GGO进展相关的临床病理学特征,并使用Kaplan-Meier法评估患者的生存率。

纳入的患者中除了主病灶(DT)外还有1-7个GGO。平均随访时间4.1±2.8年。DT切除后21例(30%)患者至少有1个GGO进展。在11例(15.7%)患者中,肿瘤进展促使手术切除(n=5)或立体定向放射治疗(n=6),平均时间为2.8±2.3年。总体肿瘤负荷的几个测量值与GGO进展(P< .03)和进展间隔时间(P< .01)相关。

在logistic回归分析表明,只有DT较大(OR 1.07, 95% CI 1.01-1.14)和GGO>1cm(OR 4.98, 95% CI 1.15-21.28)是GGO进展的独立相关的因素。GGO进展对患者的预后并无负面影响(100%进展vs 80.7%无进展; P=.1)或治疗干预也并不影响患者的预后(P=.4)。

在4.1年的平均随访中,15.7%未切除的GGO在切除pN0 DT后GGO出现进展。患者的一些临床特征与GGO的进展相关,但是GGO进展和干预对患者的生存率并无负面影响。因此,即使那些GGO进展风险最高的患者也不应拒绝切除DT。

这项研究表明,平均随访4.1年,接受手术切除淋巴结阴性浸润性腺癌同时含有多达7个同时性GGO的患者中,相当大的一部分(15.7%)患者接受治疗单个GGO。最重要的是,GGO的进展,甚至需要对GGO干预的患者多不会对生存产生负面影响。这些多原发磷屑样生长型肺腺癌患者的总体生存率仍然非常高。因此,即使那些随后需要进一步治疗的GGO患者(如较大的优势病灶或初始同时性GGO>1cm)也不应否认其局部治疗的潜在优势。

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