[Lumbosacral dysplasias].

By means of some selected examples, the myelographic and CT characteristics are presented of different lumbosacral dysplasias. The advantage of the different methods of examination (CT, CT myelography and myelography) and the improved presentation of pathological-anatomical details by means of a combination of these methods in the diagnosis of hyperplasia of the filum terminale, diastematomyelia, tethered conus, intracorporeal and anterior sacral meningocele are shown.