非小细胞型肺癌脑转移的CT与病理相关性分析

目的探讨非小细胞型肺癌（NSCLC）脑转移的CT特征与病理类型的关系。方法46例经手术及病理证实为非小细胞型肺癌伴发脑转移患者均经脑部CT检查，回顾性分析了所有患者的CT表现，并与病理进行对照。结果46例中，腺癌19例（41．3％），鳞状细胞癌9例（19．6％），腺鳞癌4例（8．7％），类癌2例（4．3％），未明确病理类型者12例（26％）。在CT像上，单发18例，多发28例，瘤周水肿见于21例，坏死囊变10例，结节状36例。结论肺腺癌容易发生脑转移，CT增强扫描有助于肺癌脑转移的诊断。

CT features of brain metastases arising from non-small cell lung cancer and their correlation with pathology

Objective To investigate the CT features of brain metastases arising from non-small cell lung cancer（NSCLC）and their correlation with pathology.Methods Forty-six patients with surgically and pathologically proved NSCLC associated with brain metastases underwent pre-contrast and post-contrast CT scans of head.CT findings in all patients were retrospectively analyzed and compared with pathology,Results Among 46 cases,the primary tumors of brain metastases comprised 19（41.3%）lung adenocarcinomas,9（19.6%）squamous cell cancer,4（8.7%）adenosquamous cancer,2（4.3%）carcinoid,and 12（26%）unknown histopathological types.On CT images,single focus was found in 18 cases,multiple foci in 28 cases;peritumoral edema was found in 31 cases,necrotic-cystic changes in 10 cases,and nodular foci in 36.Conclusion Lung adenocarcinoma easily produce the brain metastasis,while CT scanning with contrast enhancement is very helpful to make a definite diagnosis of this disease.