BMJ:疑似Zika病毒先天性感染儿童的大脑影像学表现

2016-04-14 MedSci MedSci原创

本研究旨在报告疑似Zika病毒先天性感染和小头畸形儿童的计算机断层扫描(CT)和磁共振成像(MRI)特点。

本研究旨在报告疑似Zika病毒先天性感染和小头畸形儿童的计算机断层扫描(CT)和磁共振成像(MRI)特点。

采用病例回顾性研究,纳入了伯南布哥州的23例诊断为Zika病毒先天性感染的患者。使用CT和MRI脑扫描确定这些患者的病变类型及影像学表现。

结果发现,6名儿童患者脑脊液Zika病毒IgM抗体阳性。其他17名儿童即便没有检测到IgM抗体,但是也符合疑似Zika病毒先天性感染的协议标准。共有15名儿童接受了CT检查,7名接受了CT和MRI检查,1名接受了MRI检查。22名接受CT检查的儿童其大脑皮质及皮质下白质交界处都有钙化,21名(95%)儿童存在皮质发育畸形,20名(91%)儿童脑体积减少,19名(86%)儿童存在巨脑室,11名(50%)儿童存在小脑或脑干发育不良。8名接受MRI检查儿童其皮质及皮质下白质交界处都有钙化,发育畸形主要是在额叶,也都存在巨脑室。7名(88%)儿童的小脑延髓池扩大,7名(88%)儿童存在髓鞘化延迟,6名(75%)儿童的脑体积中至重度减少,脑回格局变简单,胼胝体发育异常(38%发育不良和38%发育不全)。75%的患者其大脑发育畸形是对称的。

总而言之,大多数疑似Zika病毒先天性感染的儿童存在重度脑损伤的影像学表现。最常见的特点是皮质和皮质下白质的交界处出现脑钙化,与皮质发育异常有关,通常还会出现脑回格局变简单和巨脑回或多小脑回畸形,这种异常主要发生在额叶。此外,影像学还发现患者的小脑延髓池扩大,胼胝体发育异常(发育不良或发育不全),巨脑室,髓鞘化延迟,以及小脑和脑干发育不全。

原始出处:

Maria de Fatima Vasco Aragao, Vanessa van der Linden, et al., Clinical features and neuroimaging (CT and MRI) findings in presumed Zika virus related congenital infection and microcephaly: retrospective case series study.BMJ 2016; 353 doi: http://dx.doi.org/10.1136/bmj.i190.

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    2017-01-02 gaoxiaoe
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    2016-04-16 huirong
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