[Diagnosis and Treatment of Leptomeningeal Metastasis in Non-small Cell Lung Cancer].

Leptomeningeal metastasis (LM) is one of the disastrous events in managing advanced non-small cell lung cancer (NSCLC) due to severe clinical symptoms and a grave prognosis. Although intrathecal (IT) chemotherapy show some effects for LM in advanced NSCLC, the prognosis is still poor (12 wk-14 wk). A large majority (84%-97%) of the patients were found to have adenocarcinoma histology. Epidermal growth factor receptor (EGFR) senstive mutations were detected in 43.0%-70.5% adenocarcinoma patients with LM. EGFR tyrosine kinase inhibitors (TKIs) showed to be effective for LM in selected NSCLC patients in some reseaches, and confer a survival benefit. Furthermore, future trials need be done to determine the effect of EGFR-TKIs treatment in NSCLC-LM patients. 脑膜转移（leptomeningeal metastasis, LM）是非小细胞肺癌（non-small cell lung cancer, NSCLC）的一个灾难性事件，患者临床症状重，预后极差。尽管鞘内注射化疗在晚期NSCLC的LM患者中显示一定的疗效，NSCLC-LM生存期仍仅为12周-14周。肺腺癌是NSCLC-LM患者主要的病理类型（84%-97%）。其中43.0%-70.5%的NSCLC-LM患者检测到表皮生长因子受体（epidermal growth factor receptor, EGFR）敏感突变。研究表明，经选择的患者应用EGFR酪氨酸激酶抑制剂（tyrosine kinase inhibitors, TKIs）治疗LM有效，可延长生存期。未来需要进一步的临床试验来验证EGFR-TKIs治疗的NSCLC-LM患者的疗效。.