孤立性脑转移瘤的MR影像诊断与病理对照研究  

Solitary metastatic brain tumors:MR imaging and pathological correlation

作　　者：方松华[1] 李蓉芬[2] 许存森[2] 

机构地区：[1]浙江医大附属邵逸夫医院放射科 [2]浙江医科大学附属二院放射科

出　　处：《影像诊断与介入放射学》1997年第2期76-78,142,共3页Diagnostic Imaging & Interventional Radiology

摘　　要：本文回顾性分析了39例孤立性脑转移瘤的MR表现及其病理基础。作者认为从MR表现无法确定每个转移瘤的病理组织学类型。但作者提出两点参考征象:1.实质性结节状(Φ《3cm)病灶,T_1加权像等信号,T_2加权像等、低信号.均匀强化,“呈现小结节大水肿”征象,首先考虑转移性肿瘤,且以腺癌可能性最大。2.本组资料转移性鳞癌MRI均显示有坏死,囊变征象,转移性腺癌相对少见。MR imaging and pathological correlation of 39 solitary metastatic brain tumors were studied. It was difficult to recognize the pathologic type of the brain meatstases only by MR findings, but it could be possible in these aspects;(1) The metastatic brain adenocarcinoma is probable as a solid nodule isointense in short TR sequences and iso - or hypointense in long TR sequences, moreover, it shows extensive enhancement.(2) The necrosis or cystic degeneration is often seen in the metastatic brain squamous carcinoma on MRI.

关 键 词：MRI 脑转移瘤 颅内肿瘤 病理 

分 类 号：R739.41[医药卫生—肿瘤] R730.4[医药卫生—临床医学]