Incidence of spinal cord tumours compared with organic lesions of the CNS varies from 1.98 to 3%, and compared with brain tumour cases is less than 15% of CNS lesions (Nikolsky 1947; Razdolsky 1958; Manelfe 1992). For many years, myelography (first applied in 1923) has been considered one of the principal imaging modalities for diagnosis of spinal pathology. In the early 1980s, its place was overtaken by CT and its modification, CT myelography with soluble contrast medium. This permitted, on the one hand, reducing the rate of complications and, on the other hand, significantly improving the quality of primary diagnosis of spinal cord lesions. It is mainly used for extramedullary tumours (Aubin 1979; Post 1980; Haughton 1982).