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KMID : 1130620160120030282
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Journal of Clinical Neurology
2016 Volume.12 No. 3 p.282 ~ p.288
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Clinical Profiles and Short-Term Outcomes of Acute Disseminated Encephalomyelitis in Adult Chinese Patients
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Hong-Qi Yang
Wen-Cong Zhao
Wei-Min Yang
Yong-Li Li
Zhi-Kun Sun
Shuai Chen
Wei Li
Jian-Jun Ma
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Abstract
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Background and Purpose : Acute disseminated encephalomyelitis (ADEM) is an inflammatory demyelinating disorder that predominantly affects children. Previous studies have mostly involved children in Western developed countries.
Methods : This study retrospectively reviewed the clinical profiles of ADEM in adult Chinese patients.
Results : ADEM occurred during summer and autumn in about two-thirds of the 42 included patients. Prior infection was found in five patients and no preimmunization was recorded. The most frequent clinical presentations were alterations in consciousness (79%) and behavior changes (69%), followed by motor deficits (64%) and fever (50%). About one-quarter (26%) of the patients showed positive results for oligoclonal bands, and about half of them exhibited increases in the IgG index and 24-hour IgG synthesis rate. Magnetic resonance imaging showed white- and gray-matter lesions in 83% and 23% of the patients, respectively. Steroids were the main treatment, and full recovery occurred in 62% of the patients, with residual focal neurological deficits recorded in a few patients. After a mean follow-up period of 3.4 years, two patients exhibited recurrence and one patient exhibited a multiphasic course. One patient was diagnosed with multiple sclerosis (MS).
Conclusions : With the exception of the seasonal distribution pattern and prior vaccine rate, the clinical profiles of ADEM in adult Chinese patients are similar to those in pediatric populations. No specific markers are available for distinguishing ADEM from MS at the initial presentation. Careful clinical evaluations, cerebrospinal fluid measurements, and neuroradiological examinations with long-term follow-up will aid the correct diagnosis of ADEM.
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KEYWORD
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acute disseminated encephalomyelitis, multiple sclerosis, oligoclonal bands, magnetic resonance imaging
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