多发性硬化是一种青壮年起病的中枢神经系统炎性脱髓鞘病，发病病因至今未明。
Multiple sclerosis(MS) is a kind of inflammatory demyelinating disease of the central nervous system. Its causes remain unclear.
研究背景多发性硬化一般被认为是以中枢神经系统炎性脱髓鞘疾病为特征的自身免疫性疾病。
Background: Multiple sclerosis is a characterized demyelinating disease of the CNS and postulated to be a autoimmune disease.
结论中枢神经系统炎性脱髓鞘病ct或MRI可以有肿瘤样的非典型性表现，不易鉴别，容易造成误诊。
Conclusion CNS inflammatory demyelinating disease could have some atypical representation on CT or MRI image, they were made easily the misdiagnosis.
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