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目的:提高对单发脑转移瘤(SBM)的CT诊断和鉴别诊断的准确性。材料和方法:分析经临床及病理证实的38例SBM的CT平扫及增强表现。结果:本组SBM幕上占92.1%,右侧大脑占73.7%。瘤体位于脑皮质及皮质下区占84.2%,且常明显强化。环状强化占65.8%,结节状强化占31.6%。幕上中、重度瘤周水肿占86.8%。结论:SBM常见于幕上脑皮质及皮质下区,右侧多见;常呈环状及结节状明显强化,环壁厚薄不均,形态常不规则,结节状强化密度常不均匀,指状瘤周水肿显著,瘤体较小时瘤周水肿常较明显。
Objective: To improve the accuracy of CT diagnosis and differential diagnosis of single brain metastases (SBM). MATERIALS AND METHODS: Thirty-eight patients with clinically and pathologically confirmed CT scan and enhanced CT scan were analyzed. Results: The SBM supratentorial 92.1%, right 73.7% of the brain. Tumors in the cerebral cortex and subcortical area accounted for 84.2%, and often significantly enhanced. Ring enhancement accounted for 65.8%, nodular enhancement accounted for 31.6%. On the screen, severe peritumoral edema accounted for 86.8%. Conclusion: SBM is common in the supratentorial cortex and subcortical area, the right side of the more common; often ring and nodular significantly enhanced, uneven thickness of the ring wall, the shape often irregular, nodular enhancement often uneven, Finger peritumoral edema was significant, tumor edema often smaller when the tumor is more obvious.