[Differential diagnosis of herniation of the disks of the lumbar spine using computer tomography].

In a native examination of lumbar region by computer tomography, hernia or a sequester of the disc may be imitated, in addition to cicatricing postoperation conditions, also by a convolute of varicose extended epidural veins. An unambiguous confirmation that the tissue in frontal epidural space is based on such pathological anatomical condition is possible if a repeated tomogram is made immediately after the administration of a contrast medium into a femoral vein while inferior vena cava has been compressed.