本文分析了50例转移性脑肿瘤(多发灶30例,孤立灶20例),共计116个肿瘤的CT所见。凡是孤立病灶者,均经手术或尸检证实。所有的病例都做了CT扫描和造影剂增强扫描。转移灶多位于脑皮质和白质的交界处(82％),作者认为这是由于血流从 This article analyzes 50 cases of metastatic brain tumors (multiple lesions in 30 cases, isolated lesions in 20 cases), a total of 116 tumors seen in CT. All isolated lesions were confirmed by surgery or autopsy. CT scan and contrast enhanced scan were performed in all cases. Metastases are mostly located at the junction of the cerebral cortex and white matter (82%) and the authors believe this is due to the blood flow from