肺癌脑转移的MRI特点

目的 讨肺癌脑转移的MRI特征及其与病理类型的关系。方法 858例经临床及病理证实为肺癌的患者行脑部MRI检查,并进行回顾性分析与其原发肿瘤的病理类型进行对照研究。结果 58例行MRI检查的患者中,有脑转移者393例,占45．8％。其中腺癌117例(29．8％),小细胞肺癌110例(28．0％),鳞癌52例(13．2％),腺鳞癌16例(4．1％),大细胞癌2例(0．5％),类癌1(0．3％),不知确切病理亚型95例(24．2％)。在19例脑膜转移的患者中,原发病为腺癌6例,小细胞肺癌5例,鳞癌4例,病理类型不明者4例。在374例脑实质转移的患者中,病灶周围无明确水肿120例,轻度水肿98例,中度水肿70例,重度水肿86例。结论 癌容易发生脑转移,MRl增强扫描有助于肺癌脑转移的诊断。

MRI features of brain metastases of lung cancer

Objective To report the MRI features of intracranial metastases of lung cancer. Methods A total of 858 patients with history of primary lung cancer suspicious of brain metastases was retrospectively reviewed with MRI. Results 1. Of the 858 patients, 393(45.8%) had brain metastases on MRI. The primary tumor was lung adenocarcinoma in 117(29.8%), small cell lung cancer in 110(28.0%), squamous cell cancer in 52 (13.2%), adenosquamous cancer in 16(4.1%), large cell carcinoma in 2(0.5%) and carcinoid in 1(0.3%). The histopathological types of the primary tumor were unknow in 95(24.2%). 2. Meningeal metastasis was found in 19 patients with lung cancer. The primary tumor was of adenocarcinoma lung in 6, small cell lung cancer in 5, squamous cell carcinoma in 4 and the remaining 4 were of unknown histopathological type. 3. Edema around the lesion: in 120 cases, there was no obvious edema; the edema was slight in 98 cases, moderate in 70, serious in 86. Conclusion The brain metastasis of lung cancer is of common occurrence. MRI with enhancement is very helpful in the establishment of diagnosis.