MRI诊断脑实质转移瘤的应用(1)
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【摘要】目的分析脑实质转移瘤MRI征象，探讨MRI诊断脑实质转移瘤的价值。方法对112例经临床及病理证实的脑实质转移性肿瘤患者行MRI增强扫描，分析评价增强扫描病灶的征象特点。结果112例脑实质转移瘤患者，病灶位于大脑半球69例，小脑内43例；全脑多发48例；单发病灶64例，发生于幕上占6719%，幕下占3281%；增强后共发现病灶743个，环状强化274个，结节状强化336个，团块状强化94个，不规则形增强39个；最小直径为2 mm，最大直径为60 mm，大部分直径<30 mm。结论MRI增强扫描可见病灶在大脑半球或小脑内均可发生，多呈圆形或类圆形，直径一般<30 mm，瘤体呈多种强化形式，以结节状多见，多伴瘤体周围水肿，常见坏死囊变、出血。综合分析可提高诊断和鉴别诊断水平。
【关键词】脑实质转移瘤；MRI；增强扫描
The effect of MRI diagnose the cerebral metastasis tumorLI Zhanjun, ZHOU Zhiyang, WANG Ying Department of Radiology,The Fifth Affiliated Hospital of Sun Yatsen University, ZhuHai 519000,China
【Abstract】ObjectiveTo analyse and investigate the MRI appearance and the value of MRI diagnose of the cerebral metastasis tumor MethodsMRI enshanced scanning were performed on the 112 cases diagnosed cerebral metastasis tumor by clinical method and pathology, analysised and appraised the appearance characteristic of the cerebral metastasis tumor Results112 cases of the cerebral metastasis tumor, the cerebral metastasis tumors of 69 cases were in the cerebral hemisphere,43 cases were in the epencephalon; multiple metastasis of global brain 48 cases, solitary metastasis tumors 64 cases, supratentorial is 6719% and subtentorial is 3281%; after enhanced discover 743 metastasis tumors,there were 274 circle enhancements,336 nodular enhancements, 94 mass enhancements, 39 irregular shape enhancements; diversified enhancements was concurrenceThe maximum diameter was 2 mm, minimum diameter was 60 mm, most of all diameter were lessthan 30 mm ConclusionMRI enhanced scanning discover the cerebral metastasis tumor in the the cerebral hemisphere and the epencephalon,most are rotundity or resembling rotundity,the diameter is lessthan 30 mm,the tumors present diversified enhancements, most are nodular enhancements, most have edema, necrosis capsule and haemorrhage are common Analysis by synthesis would enhance the level of diagnosis and differential diagnosis.
【Key words】Cerebral metastasis tumor; MRI; Enhanced scanning
作者单位：519000珠海,中山大学附属第五医院放射科(李占军王颖)；中山大学附属第六医院放射科(周智洋)
通讯作者：李占军脑转移瘤是中老年人较为常见一种恶性疾病，约占全部颅内肿瘤的40% ......
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