We describe a rare complication of myelography. A subarachnoid filling defect was apparent on the postmyelographic CT but not on conventional myelography. MR imaging performed later showed a spinal subarachnoid hematoma (SSAH), extending from L3 to L5. Lumbar puncture may rarely be a cause for SSAH and is more common in patients with coagulopathy. Significant back pain, paresis, radiculopathy, ...

Serious adverse reactions after myelography with non ionic contrast media are relatively rare. No cases of encephalopathy and only one of seizure have been reported with intrathecal iopamidol. We describe two patients who had a seizure after iopamidol myelography in a retrospective series of 236 consecutive patients between April 1986 and September 1987 to emphasize that serious reactions to in...

Two hundred patients who underwent myelography with iopamidol were independently assessed as to film quality and adverse side effects. Comparison was made with a similarly assessed group of 1,000 patients who underwent myelography with metrizamide. Diagnostic quality was generally excellent with both contrast media. The incidence of side effects, notably vomiting and headache, was significantly...

Since the introduction of the water-soluble contrast agent metrizamide, reports of side effects in man following myelography have been limited to the frequent occurrence of relatively minor symptoms such as headache and vomiting , and the occasional episode of grand mal convulsions [17]. Such convulsions may relate to an excessive quantity of the contrast agent spilling over the convexity of th...