肺癌患者小脑脑膜广泛种植转移的MR表现及分析  

MRI Findings and Analysis of Extensive Implant Metastasis of Cerebellar Meninges in Patients with Lung Cancer

作　　者：杨超[1] 阳波[1] Yang Chao;Yang Bo(Department of Radiology,The Fourth People′s Hospital of Sichuan Province,Chengdu,Sichuan 610016,China)

机构地区：[1]四川省第四人民医院放射科,四川成都610016

出　　处：《四川医学》2018年第6期705-707,共3页Sichuan Medical Journal

摘　　要：目的通过观察肺癌患者小脑脑膜广泛种植转移的MR表现,分析其特点。方法使用飞利浦1.5T MR常规扫描及增强扫描,对32例小脑脑膜广泛种植转移进行诊断分析,总结其MR表现特点。结果 25例出现双侧小脑较对称性广泛种植转移,5例出现双侧小脑不对称广泛种植转移,2例出现单侧小脑转移;30例出现双侧小脑呈花斑样或播散样强化,其中有25例呈较对称性广泛强化,32例均无明显占位效应,28例无明显瘤周水肿,仅4例少许水肿。MR各序列诊断分别为T1WI 19例,T2WI 20例,增强30例,T1WI、T2WI与增强诊断率比较差异有统计学意义(P<0.05)。结论肺癌患者小脑脑膜广泛种植转移,多数为双侧小脑较对称性广泛种植转移,绝大多数呈花斑样或播散样强化,所有病例均无明显占位效应,大多数无瘤周水肿,增强扫描诊断肺癌小脑脑膜广泛种植转移具有重要意义。Objective To analyze the characteristics of extensive implant metastasis of cerebellar meninges in patients with lung cancer by observing the MRI manifestations of it.Methods 32 cases of extensive implant metastasis of cerebellar meninges were diagnosed and analyzed by Philips 1.5T conventional and contrast-enhanced MRI,and their MRI features were summarized.Results There were 25 cases of bilateral cerebellar symmetrical extensive implantation metastasis,5 cases of bilateral cerebellar asymmetrical extensive implantation metastasis and 2 cases of unilateral cerebellar metastasis;In 30 cases,bilateral cerebellum showed blotchy or diffusion-like enhancement,of which 25 cases showed more symmetrical and extensive enhancement.There were no obvious space occupying effect in all 32 cases,28 cases had no obvious edema around the tumor,and only a little edema was found in 4 cases.The diagnosis of MR sequences were T1WI in 19 cases,T2WI in 20 cases and enhancement in 30 cases.There was significant difference among T1WI,T2WI and enhanced diagnostic rate(P<0.05).Conclusion The majority of lung cancer patients with extensive implant metastasis of cerebellar meninges were bilateral and symmetrical,most of which were plaques or diffusion-like enhancement.There was no significant space occupying effect in all cases,most of which didn t have peritumoral edema.Enhanced scanning was of great significance in the diagnosis of lung cancer patients with extensive implant metastasis of cerebellar meninges.

关 键 词：磁共振成像 肺癌 小脑脑膜 种植转移 

分 类 号：R734.2[医药卫生—肿瘤]