Intraspinal meningocele.

2 patients with broad spinal canal, positive radiographic symptoms of spinal expansion but negative clinical symptoms are documented. Intraspinal meningocele with paraspinal extension could be confirmed by Pantopaque myelography and CT. An inborn mesenchymal developmental error is assumed as the cause of this malformation.

Some unusual complications of myelography and lumbosacral radiculography.

In 570 patients an examination of the subarachnoideal space was performed. In 77 of them oily contrast media, in 93 oxygen and in the remaining 400 patients different water-soluble contrast media were used, including Conray 60, Dimer X and Amipaque. Neurotoxic spinal complications occurred in 12 of the 400 patients investigated with hydrosoluble agents (i.