转移性脑肿瘤约占整个脑部肿瘤的10%以上,根据原发部位,引起脑转移的最多见的肿瘤是肺癌,大约占脑转移的30～40%。其次是乳癌、胃肠道恶性肿瘤和黑色素瘤等。就肺癌本身而言,脑部也是其最常见的远道转移的器官之一(其他组织和脏器有骨、肝、肾上腺等)、尸检报告肺癌脑转移的发生率为30～50%,小细胞性肺癌甚至有更高的转 Metastatic brain tumors account for more than 10% of all brain tumors. According to the primary site, the most common tumor that causes brain metastases is lung cancer, accounting for approximately 30-40% of brain metastases. Followed by breast cancer, gastrointestinal cancer and melanoma. In the case of lung cancer itself, the brain is also one of its most common organs for distant metastases (bone, liver, adrenal glands, etc. in other tissues and organs), and autopsy reports that the incidence of brain metastases from lung cancer is 30 to 50%. Small cells Lung cancer even has a higher turn