[Lumbar phlebography: anatomy and technique (author's transl)].

This article describes the normal radiological anatomy of the epidural veins whose understanding is necessary for the correct interpretation of venographic studies. Three ways of achieving adequate visualization of the epidural venous plexus are described. Experience with 80 cases is reported; a comparison has been made among the degree of visualization of the epidural venous plexus, the length of time, the cost and the amount of radiation received by the operator and patients during the performance of each technique. Preference is expressed for simultaneous injection of contrast media via two needles introduced into right and left femoral veins.