胎儿蛛网膜囊肿磁共振随访研究  

The follow-up of fetal arachnoid cyst by magnetic resonance imaging

作　　者：马慧[1] 林剑军[1] 戴李华 莫亚宁 梁玄菁 MA Hui;LIN Jianjun;DAI Lihua;MO Yaning;LIANG Xuanjing(Department of Radiology,Guangxi Maternal and Child Health Hospital,Nanning 530003,China)

机构地区：[1]广西壮族自治区妇幼保健院放射科,广西南宁530003

出　　处：《医学影像学杂志》2024年第2期79-82,共4页Journal of Medical Imaging

基　　金：广西科技计划项目(编号:桂科AD17129016)。

摘　　要：目的 探讨胎儿蛛网膜囊肿随胎龄及年龄增长而发生的形态改变及预后评估。方法 选取磁共振诊断蛛网膜囊肿18例胎儿的MRI资料及其相应产后随诊资料,通过随访对比蛛网膜囊肿部位、大小变化及周围组织关系等方面数据进行总结。结果 位于幕下蛛网膜囊肿10例,其中右侧小脑延髓池1例,四叠体池右侧1例,右侧小脑半球后方2例,小脑蚓下方偏左1例,后颅窝中线处5例。位于幕上8例,其中中间帆腔区域1例,小脑幕右上方1例,左右侧颞极各3例。18例胎儿中15例随访至生后;另3例胎儿期随访2次,产后未遵嘱随访。蛛网膜囊肿逐渐增大11例,其中后颅窝中线处仅1例增大。生后进行性脑积水4例,3例发生于偏中线处,1例位于中间帆腔区域。结论 胎儿蛛网膜囊肿因部位不同,其结局具有一定差异。部分蛛网膜囊肿有随胎龄及年龄增大趋势,偏中线处蛛网膜囊肿更容易进行性增大,胎儿期其增长速度及对邻近脑组织的受压、脑室梗阻变化相对产后变化要慢。Objective To investigate the morphological changes and prognosis of fetal arachnoid cyst with gestational age and postpartum age by MRI.Methods We condncted retrospective comparison to 18 follow-up cases of fetal archnoidal cysts by MRI before and after birth.The location,morphology and the relationship of surrounding brain parenchyma of fetal arachnoid cyst were observed in different fetal period to evaluate the prognosis.Results There were 10 arachnoid cysts cases located under the tentorium of the cerebellum,including 1 case in the right cerebellomedullary cistern,1 case in the right of quadrigeminal cistern,2 cases behind the right cerebellar hemisphere,1 case below the left cerebellar hemisphere,and 5 cases in the middle line of the posterior fossa.There were 8 arachnoid cysts cases located up the tentorium of the cerebellum,including 1 case in the cavum velum interpositum,1 case in the right supratentorial cerebellum,and 3 cases respectively in the right and left temporal pole.In 18 follow-up cases,15 fetuses were followed up after birth,and 3 were followed up twice during fetal period,but not postpartum follow-up.11 cases arachnoid cysts were gradually enlarged,of which only 1 case was enlarged in the middle line of posterior fossa.4 cases with progressive hydrocephalus were found after the birth,3 cases occurred deviating from midline and 1 case was located in the middle sail cavity.Conclusions The outcome of fetal arachnoid cyst is different due to different location.Some arachnoid cysts tend to increase with gestational age and age,and the arachnoid cysts that deviate from the midine are more prone to progressive enlargement.The growth rate,compression of adjacent brain tissue and ventricular obstruction in fetal period are slower than that in postpartum period.

关 键 词：磁共振成像 胎儿 蛛网膜囊肿 随诊 

分 类 号：R714.51[医药卫生—妇产科学] R445.2[医药卫生—临床医学]