[Myelography with water soluble contrast for malformations of the conus medullaris and filum terminale (author's transl)].

Contrast demonstration of the distal dural sac and its contents is essential for an understanding of the regional pathology in cases of occult or previously operated non-occult forms of lumbar myelodysplasia. Only in this way is it possible to demonstrate the position of the conus medullaris, the course of the nerve roots, thickening of the filum terminale or other soft tissue abnormalities. Of various methods, the most detailed information can be obtained by the use of water soluble contrast injected after careful, high lumbar puncture (L 2/3). This is illustrated in five cases in which Dimer X was used. In view of its proven low neurotoxicity, Amipaque, which is now available in Germany, will be used in future.