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目的 研究脊髓内室管膜下瘤的MRI特征。方法 4例脊髓室管膜下瘤均行MR检查并经手术病理证实 ,均为男性 ,年龄 15～ 47岁 ,平均 36 .3岁。回顾性分析脊髓内室管膜下瘤的MRI表现 ,结合术中所见总结MRI诊断与鉴别诊断要点。结果 4例脊髓内室管膜下瘤分别位于C3～T3、C2～ 6、T6～ 12、C1～T2段脊髓 ,肿瘤均位于脊髓腹侧 ,呈偏中心性生长。 1例有轻度脊髓空洞。MRT1WI为等或低信号 ,信号不均 ,内有更低信号 ;T2 WI为高信号。 2例伴有小出血灶。增强扫描 ,3例肿瘤无强化或强化轻微 ,1例强化明显。结论 MRI可以很好评价脊髓内室管膜下瘤 ,当患者具备上述特点时高度提示脊髓内室管膜下瘤的可能。
Objective To study the MRI features of subependyma in the spinal cord. Methods 4 cases of subdural tumors of the spinal cord were examined by MR and confirmed by surgery and pathology. All were male, aged from 15 to 47 years (average 36.3 years). Retrospective analysis of the MRI findings of subependymoid spinal cord, combined with intraoperative findings MRI diagnosis and differential diagnosis points. Results Four cases of subepithelial subendothelium were located in the spinal cord of C3 ~ T3, C2 ~ 6, T6 ~ 12 and C1 ~ T2, respectively. 1 case had mild syringomyelia. MRT1WI equal or low signal, the signal is uneven, there is a lower signal; T2 WI is a high signal. 2 cases accompanied by small hemorrhage foci. Enhanced scan, 3 cases of tumor without enhancement or slight enhancement, 1 case of intensive obvious. Conclusion MRI can be a good evaluation of subependymal spinal cord, when patients with these characteristics are highly suggestive of spinal subepithelial tumor may be.