作者分析64例脑转移瘤的CT表现,结果表明:以肺癌脑转移最多见(75％)。能检出直径为3mm的小瘤灶。脑转移瘤灶平扫下呈现等密度居多(39.4％),其次为等低混杂密度(21.3％)和高密度(19.7％),几乎均有增强表现。肺鳞癌和肺腺癌脑转移瘤环状增强较多。作者提出对已查明原发癌肿的患者,即使CT图象上仅显示脑水肿亦应考虑本病;并建议肺癌患者宜常规行颅脑CT增强扫描,以便及时诊断和治疗。 The authors analyzed the CT findings of 64 cases of brain metastases, the results showed that the most common brain metastases in lung cancer (75%). Can detect a diameter of 3mm in the tumor. The density of brain metastases was mostly equal (39.4%) under plain scan, followed by the low density (21.3%) and the high density (19.7%), with almost all enhancement. Lung squamous cell carcinoma and lung adenocarcinoma brain metastases more annular enhancement. The authors suggest that patients who have been identified with primary cancer, even if the CT images show only cerebral edema should also consider the disease; and recommended lung cancer patients should routine CT enhanced scan for timely diagnosis and treatment.