[Gaseous myelography. Accidents and complications. Case reports].

Attention is called to the risks of gas myelography and two cases of complications are described. One of these, observed personally, was fatal and its possible pathogenetic mechanisms are illustrated. Stress is laid on certain rules and precautions that should be respected in radiological and anaesthesiological practice. Insufflation pressure and volumes of injected air deserve particular attention and scrupulous intraoperative control cut of vital parameters must be carried and appropriate attention paid to patient hydration during the postoperative period.