Welch K, Shillito J, Strand R, Fischer E G, Winston K R
J Neurosurg. 1981 Oct;55(4):604-9. doi: 10.3171/jns.1981.55.4.0604.
Caudal herniation of the hindbrain, indistinguishable from the Chiari I deformity, may occur after the establishment of spinal subarachnoid shunts and become symptomatic years after the procedure. Examples are presented and others are cited from the literature. It is proposed that the force responsible for the displacement is the difference in pressure between the cranial and spinal compartments. On the basis of these observations and other considerations as well, a similar process, disproportionate absorption of cerebrospinal fluid from the spinal region, might account for the spontaneous form of the Chiari I deformity.
后脑尾侧疝出，与Chiari I畸形难以区分，可发生于脊髓蛛网膜下腔分流术后，并在术后数年出现症状。本文列举了一些病例，并引用了文献中的其他病例。据推测，导致移位的力量是颅腔和脊髓腔之间的压力差。基于这些观察结果以及其他因素，类似的过程，即脊髓区域脑脊液的过度吸收，可能是Chiari I畸形的自发形式的原因。
