脊髓栓系综合征的MRI诊断

目的　探讨脊髓栓系综合征 (TCS)的MRI特点及诊断价值。方法　对 30例TCS患者的MRI资料进行了回顾性分析 ,所有病例均经手术病理证实。结果　 30例中 ,脊髓圆锥尖部位置均低于L2 椎体中部以下 ,脊髓受牵拉固定 ;单纯终丝粗大紧张 4例 ,约占 13%;脂肪堆积 13例 ,约占 43%;脊膜膨出 4例 ,约占 13%;脊膜脊髓膨出 3例 ,占 10 %;椎管内肿瘤 6例 ,占 2 0 %,其中神经纤维瘤 2例 ,皮样囊肿 2例 ,表皮样囊肿 1例 ,畸胎瘤 1例。结论　MRI的优良的软组织分辨率、多方位成像等优点 ,能明确显示脊髓圆锥的位置 ,形态及伴发畸形 ,对诊断TCS具有重要价值。

MRI Diagnosis of Tethered Spinal Cord Syndrome

Objective To study the MR features and diagnostic value of tethered cord syndrome(TCS).Methods MR findings of 30 cases with TCS were reviewed.All cases were confirmed by operation and pathology.Results In 30 cases,the levels of the tips of the conus were below the middle of L 2 vertebral body.Spinal cords were fixed as result of being drawn.MR findings were as follows:Single thickened and tightened filum terminale(4 cases,13%);Lipoid buld(13 cases,43%);Myeloey stocele(3 cases,10%);Meningcele(4 cases,13%);Tumor in spinalcannal(6 cases,20%) Included neurofibroma (2 cases),dermoid cyst (2 cases) and epidermoid (1 cases),teratoma(1 cases).Conclusion MRI with high soft tissue resolution and mutiple sections imaging is superior to any other imaging means,it can clearly demonstrate the position and shape of the spinal cord conus as well as the associated malformation.