椎管内胚胎性肿瘤的MRI诊断6例临床分析

目的 评估椎管内胚胎性肿瘤的MRI特征。方法 回顾性分析经手术和病理证实的6例椎管内胚胎性肿瘤的MRI表现。结果 表皮样囊肿3例，T1、T2加权显示各种不典型信号类型；脂肪瘤2例，T1加权示高信号，T2加权衰减为中等信号；髓内肠源性囊肿1例，T1加权显示低信号，T2加权示高信号，结论 除脂肪瘤外，椎管内胚胎性肿瘤的MRI表现缺乏典型的特征，MRI诊断应当结合发育异常病史，病理学和病原学。

MRI diagnosis of embryonal tumors in the spinal canal: analysis of 6 cases.

OBJECTIVE: To evaluate the magnetic resonance imaging (MRI) features characterizing embryonal tumors in the spinal canal. METHODS: Retrospective analyses of the MR images were conducted in 6 patients with surgically and pathologically confirmed embryonal tumors in the spinal canal. RESULTS: Epidermoid cysts in 3 cases displayed a variety of non-characteristic signal intensity patterns on T1- and T2-weighted images (T1WI and T2WI). Lipomas in 2 cases showed high signal intensity on T1WI and attenuated to intermediate signal intensity on T2WI. An intramedullary neurenteric cyst in 1 case was illustrated as low signal intensity on T1WI and high signal intensity on T2WI. CONCLUSION: The MRI presentation of embryonal tumors in the spinal canal with the exception of lipomas is devoid of typical features, and their MRI diagnosis should be complemented by history of developmental anomaly and pathological and etiological findings.