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目的 探讨肺癌脊髓内转移 (ISCM)的MRI表现特征及病理机制。方法 对 3例经手术病理证实及 4例临床确诊的肺癌脊髓内转移的MRI表现进行回顾性分析。全部病例均行MRI平扫及钆喷替酸葡甲胺 (Gd DTPA)增强扫描。结果 7例转移瘤均为单发 ,3例位于胸段 ,4例位于脊髓圆锥部。主要MRI表现 :肿瘤均位于脊髓中央 ,T1WI 1例呈低信号 ,6例呈等信号 ,T2 WI全部为高信号 ;病灶上下方髓内可见水肿 2例 ,空洞 3例 ;平扫肿瘤边界模糊不清 ,增强扫描均呈明显强化 ,其中3例呈不均匀强化 ,3例呈环形强化 ,1例呈结节样强化 ,增强后肿瘤边界显示十分清楚。结论 肺癌脊髓内转移的MRI表现常为明显强化的髓内肿物 ,但其缺乏特征性 ,定性诊断需结合临床资料综合分析
Objective To investigate the MRI features and pathology of intracranial spinal cord metastases (ISCM) in lung cancer. Methods The MRI findings of 3 cases of spinal metastases of lung cancer confirmed by surgery and pathology and 4 clinically confirmed cases were retrospectively analyzed. All patients underwent MRI scan and gadolinium spray for acid meglumine (Gd DTPA) enhanced scan. Results 7 cases of metastases were single, 3 cases were located in thoracic, 4 cases were located in the conus medulla. The main MRI manifestations were as follows: the tumors were all located in the center of the spinal cord, 1 case showed low signal in T1WI, 6 cases showed equal signal and T2 WI were all high signal; 2 cases of edema and 3 cases of empty cavity in the marrow of the lesion; Clear and enhanced scanning were significantly enhanced, of which 3 cases were heterogeneous enhancement, 3 cases showed ring enhancement, 1 case was nodular-like enhancement, the enhanced tumor boundary is very clear. Conclusion MRI findings of spinal cord metastases of lung cancer are often obviously enhanced intramedullary tumors, but their characteristics are lacking. The qualitative diagnosis should be combined with the comprehensive analysis of clinical data