Decrop E, Wilms G, Demaerel P, Marchal G, Goffin J, Baert A L
Department of Radiology, University Hospitals KU Leuven, Belgium.
J Belge Radiol. 1990 Mar;73(2):129-33.
A case of meningeal cyst of the spinal canal in the lumbosacral region is described. A CT scan showed a soft tissue mass associated with bone erosion. Myelography and computerised tomographic myelography revealed a cyst filling with contrast and thus CSF containing. The diagnosis of meningeal cyst was confirmed in a non-invasive way by MRI showing a mass with the same signal intensities as CSF on both T1 and T2 weighted images. Final characterisation of meningeal cysts in one of the three categories comprising spinal extradural meningeal cyst without spinal nerve root fibers (type I), spinal extradural meningeal cyst with spinal nerve root fibers (type II) and intradural meningeal cyst (type III) is impossible without operative inspection and histological examination.
本文描述了一例腰骶部椎管内脊膜囊肿的病例。CT扫描显示一个与骨质侵蚀相关的软组织肿块。脊髓造影和计算机断层脊髓造影显示囊肿内充满造影剂，因此含有脑脊液。通过MRI以非侵入性方式确诊为脊膜囊肿，在T1加权和T2加权图像上该肿块的信号强度与脑脊液相同。如果不进行手术检查和组织学检查，就不可能将脊膜囊肿最终归类为以下三种类型之一：不含脊神经根纤维的硬脊膜外脊膜囊肿（I型）、含脊神经根纤维的硬脊膜外脊膜囊肿（II型）和硬脊膜内脊膜囊肿（III型）。
