[Efficacy of CT omnipaque myelography in the demonstration of intraspinal space-occupying diseases (report of 77 cases)].

The value of omnipaque myelography and CT myelography in 77 cases of intraspinal space-occupying lesions (51 extramedullary and 26 intramedullary confirmed by operation) was reviewed. In 69 cases the preoperative diagnosis was accurate, but not in the other 8 cases. It is not advisable according to the authors' experience to have both myelography and postmyelography CT scan done for all intraspinal space-occupying lesions. For most of the extramedullary tumors, myelography alone proved to be adequate. For intramedullary lesions the information obtained from myelography was inconclusive and postmyelography CT scan as a supplementary procedure was necessary.