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1文献来源Johung KL,Yeh N,Desai NB,et al.Extendedsurvival and prognostic factors for patients with ALK-rearranged non-small-cell lung cancer and brain metastasis[J].J Clin Oncol,2016,34(2):123-129.2证据水平2A。3背景·中枢神经系统转移在晚期肺腺癌的发生率约为30%,中位总生存期(overall surviva