University of Missouri, School of Medicine, One Hospital Dr, Columbia, MO, 65212, USA.
Division of Plastic Surgery, University of School of Medicine, One Hospital Dr, Columbia, MO, 65212, USA.
Childs Nerv Syst. 2021 Jun;37(6):2121-2124. doi: 10.1007/s00381-020-04906-x. Epub 2020 Oct 3.
Positional plagiocephaly is the most common cause of cranial asymmetry. Deformational brachycephaly denotes a head shape characterized by occipital flattening and increased bilateral width, which can also be caused by external deformation of the moldable infant cranium in positional bilateral posterior plagiocephaly. There are reports of craniosynostosis associated with Chiari I malformation (CIM), possibly caused by decreased posterior fossa volume and related to increased intracranial pressure. To the best of our knowledge, this is only the second case report demonstrating acquired CIM in a child with positional brachycephaly. Of note, the fact that the CIM resolved after helmet therapy could support the hypothesis that CIM is associated with decreased volume of the posterior fossa. However, these two conditions may be independent of one another. More research is needed to identify an association between the two conditions.
姿势性斜头畸形是最常见的颅面不对称原因。变形性短头畸形是指头部形状呈扁平状，双侧增宽，也可由位置性双侧后斜头畸形导致可塑婴儿头颅外部变形引起。有报道称颅缝早闭与 Chiari I 畸形（CIM）有关，可能是由于后颅窝容积减小引起的，与颅内压增高有关。据我们所知，这是唯一一例在姿势性短头畸形儿童中获得性 CIM 的病例报告。值得注意的是，CIM 在头盔治疗后得到缓解，这一事实支持了 CIM 与后颅窝容积减小有关的假说。然而，这两种情况可能是相互独立的。需要进一步的研究来确定这两种情况之间的关联。
