从脑转移瘤的原发灶来看,以肺癌最多,约40％左右。最近,由于脑外科诊断、治疗技术的发展,能较早地发现转移性脑肿瘤,做开颅手术治疗的也逐渐多。就肺原发转移性脑肿瘤来说,多死于肺病变恶化,从开颅术的效果来看,做比不做好。但是,过去没有一个指标来判断转移性脑肿瘤的手术效 Judging from the primary lesions of brain metastases, lung cancer is the most common, about 40%. Recently, due to the development of brain surgery diagnosis and treatment technology, metastatic brain tumors can be found early and craniotomy is gradually being treated. In the case of primary metastatic brain tumors of the lung, more deaths from lung lesions have occurred, and from the effect of craniotomy, it is worse than not. However, there was no indicator in the past to judge the efficacy of metastatic brain tumors.