[Lumbar phlebography: methodological choice and reliability in the radiographic study of lumbar disk hernias]. / La flebografia lombare: scelta metodologica ed affidabilitá nello studio radiografico dell ernie discali lombari.

Lumbar epidural venography was used as the examination of choice in the investigation of suspected disc herniation in 270 patients. Compression or occlusion of an epidural and/or radicular vein at the disc level is the most significant venographic abnormality. In 110 patients operated on, the reliability of lumbar epidural venography was equal to 97.2%.