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目的探讨脑转移瘤CT表现进一步提高对本病的认识和诊断水平。方法回顾性分析近年在新沂市铁路医院作CT检查的经临床与病理证实的脑转移瘤41例,所有病例均行平扫,其中32例行增强扫描,部分病例作延时扫描。结果转移瘤多发于灰白质交界区,好发于额顶叶。病灶直径在2 cm以下者占88.1%。平扫呈等或稍低、稍高密度,增强后病灶表现为三种形式:当肿瘤为实质性,呈均匀强化;当转移瘤内出现坏死囊变,则呈环形强化,表现薄壁或不规整厚壁强化;混杂密度不均匀强化肿块。CT较特征性表现,脑水肿与病灶大小不成比例,呈小结节大水肿。结论 CT平扫+增强扫描能对脑转移瘤的诊断和鉴别诊断有重要的临床价值。
Objective To investigate the CT manifestations of brain metastases to further improve the understanding and diagnosis of this disease. Methods Retrospective analysis of 41 cases of clinically and pathologically confirmed brain metastases in recent years in Xinyi City Railway Hospital for CT examination. All patients underwent plain scan. Among them, 32 patients underwent enhanced scan and some patients underwent delayed scan. Metastatic tumors were found in the borderline of the hyperplasia, appearing in the frontal lobe. Lesions diameter less than 2 cm accounted for 88.1%. Plain scan was equal or slightly lower, slightly higher density, enhanced lesions showed in three forms: When the tumor is substantial, uniform enhancement; when necrotic cystic lesions within the metastasis, the ring was enhanced, the performance of thin-walled or not Regrind thick-walled reinforcement; heterogeneous heterogeneous intensified lumps. CT is more characteristic of the performance, cerebral edema and the size of the lesion is disproportionate, was a small nodular large edema. Conclusion CT scan + enhanced scan can have important clinical value in the diagnosis and differential diagnosis of brain metastases.