Fig. 3From: How to locate the dural defect in a spinal extradural meningeal cyst: a literature reviewSeveral indirect signs on CT findings. A Axial CT revealed the widening of interpedicle distance and thinning of the pedicle. B Axial CT cystography revealed bony scalloping erosion of the posterior edge of the vertebra. Although both the subarachnoid space and the cyst were developed, no cleft was foundBack to article page