Objective To analyze the diagnostic and clinical value of MRI in intraspinal teratoma. Methods The MRI manifestations and clinical datas of 12 cases with intraspinal teratoma proved by surgery and pathology were analyed retrospectively. Results 9 cases were situated in extramedullary subdural,and 3 in the spinal cordCconus medullaris n = 2) ;thoracic and lumbar vertebral canal (n = 3) , thoracic vertebral canal (n = l),lumbar vertebral canal (n = 6),sacral canal(n = 2). Lesions displayed class circle,ellipse and lobulated. Lesions showed mixed signals,solid lesions(n = 8) ,cystic lesions(n = 4) ;fat were seen in 10,and calcification in 3. All cases had not been obviously streng thened after enhancement scanning. 6 cases with congenital malformation. Conclusion MRI manifestations of intraspinal teratoma have certain features, which have great value in diagnosis and treatment.%目的 探讨椎管内畸胎瘤(IT)的磁共振成像(MRI)诊断及临床价值.方法 回顾性分析12例经手术及病理检查证实IT的MRI表现及临床资料.结果 病灶位于髓外硬膜下9例,髓内3例(其中脊髓圆锥2例);其中胸腰段3例,胸段1例,腰段6例,骶管内2例.病灶呈类圆形、椭圆形或分叶状.MRI示病灶为混杂信号,实性为主病灶8例,囊性为主病灶4例;10例可见脂肪,3例可见少许钙化灶.增强扫描后,所有病例均未见明显强化.6例合并先天畸形.结论 IT的MRI表现具有一定的特征性,对IT的诊断具有参考价值.
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