脊髓髓内转移性肿瘤MRI征象表现及其诊断价值分析

Analysis on MRI Signs and Its Diagnostic Value for Spinal Intramedullary Metastatic Tumors

目的分析脊髓髓内转移性肿瘤MRI征象表现及其诊断价值。方法回顾性分析我院2018年2月至2019年7月收治的21例脊髓髓内转移性肿瘤患者的临床资料,观察MRI平扫及增强扫描的影像特点,分析脊髓髓内转移性肿瘤的MRI表现,与病理诊断结果进行比较,计算MRI检查对脊髓髓内转移性肿瘤的诊断正确率。结果 MRI检查共正确诊断脊髓髓内转移性肿瘤19例(90.48%),与病理结果无明显差异(P>0.05);21例患者中,环形强化6例,斑点状强化4例,结节状强化8例,斑片状强化3例。伴随征象包括8例病灶周围脊髓伴有水肿,10例脊髓增粗,3例脊髓脊膜增厚伴多发小结节。其中4例冠状位图像上同时显示肺内团块状病灶,2例同时显示第四脑室内存在病灶。结论 MRI检查可清楚显示脊髓髓内转移性肿瘤的影像学特点,对肿瘤的定位、定性诊断及判断肿瘤与邻近组织的关系具有重要的价值,结合患者临床可提高诊断准确率。

Objective To analyze the MRI signs and diagnostic value for spinal intramedullary metastatic tumors.Methods The clinical data of 21 patients with spinal intramedullary metastatic tumors who were admitted to our hospital from February 2018 to J uly 2019 were retrospectively analyzed.The imaging features of MRI plain and enhanced scans were analyzed.MRI features of spinal intramedullary metastatic tumors was analyzed.The characteristics were compared with those of the pathological diagnosis results,and the diagnostic accuracy of MRI examination for spinal intramedullary metastatic tumors was calculated.Results MRI examination correctly diagnosed 19 cases with spinal intra medulla ry metastatic tumors(90.48%),and there was no significa nt difference with pathological results(P>0.05).In this group of 21 patients,there were 6 cases with ring enhancement,4 cases with spotted enhancement,8 cases with nodular enhancement,and 3 cases with patchy enhancement.Concomitant signs included:spinal cord accompanied with edema around the lesion in 8 cases,thickening of the spinal cord in 10 cases,thickening of spinal meninges with multiple small nodules in3 cases.In 4 cases,the coronal image showed mass lesions in the lung at the same time,and 2 cases showed lesions in the fourth ventricle at the same time.Conclusion MRI examination ca n clea rly show the imaging features of intramedullary metastatic tumors of the spinal cord.It has important value for tumor localization,qualitative diagnosis and judging the relationship between tumor and adjacent tissues.The com bination of clinical symptoms of patients can improve the diagnostic accuracy.