脑转移瘤为中枢神经系统常见的肿瘤 ,占颅内肿瘤的 10 %～ 15 %。中晚期实体瘤患者中约有 2 0 %～ 40 %会发生脑转移 ,随着肿瘤患者生存期延长 ,脑转移瘤的发病率还可能继续增长。由于神经系统的各种压迫症状严重影响其生活质量 ,常危及病人的生命 ,预后极差。若不治疗中位生存 Brain metastases are common tumors of the central nervous system, accounting for 10% to 15% of intracranial tumors. About 20% to 40% of patients with advanced solid tumors will develop brain metastases. With the prolongation of the survival of cancer patients, the incidence of metastases may continue to increase. As the various nervous system symptoms of severe impact on their quality of life, often endangering the patient’s life, the prognosis is poor. Without treatment, median survival