Biomaterial Database

Bulging lumbar intervertebral disk: myelographic differentiation from herniated disk with nerve root compression. 1982

S A Kieffer, and R G Sherry, and D E Wellenstein, and R B King

Deformities of the margins of the contrast material-filled lumbar thecal sac are common findings at myelography in patients with low back pain, but not all such deformities are due to herniated disks. Differentiation at Amipaque myelography between a diffusely bulging disk (unlikely to cause nerve root compression) and a herniated disk (which typically causes nerve root compression) is based on the curvature and extent of the extradural deformity of the anterolateral margin of the contrast-filled sac and on the presence of fusiform widening of the most distal part of the affected nerve root. The deformity caused by a bulging disk is rounded, usually symmetrical (although occasionally more prominent on one side), and does not extend above or below the disk space; the nerve root is uniform in caliber and normal in size. The deformity caused by a herniated disk is angular and extends cephalad and/or caudal to the level of the disk space; the affected nerve root is usually widened in its most distal visible part. A consecutive series of 33 patients with clinically suspected lumbar disk herniation and no previous history of back surgery underwent laminectomy. Using the criteria listed above for differentiation of bulging from herniated disk on Amipaque myelography, the myelographic diagnosis was correct in all six operatively confirmed bulging disks and in 26 (96%) of 27 operatively verified disk herniations.

UI	MeSH Term	Description	Entries
D007405	Intervertebral Disc Displacement	An INTERVERTEBRAL DISC in which the NUCLEUS PULPOSUS has protruded through surrounding ANNULUS FIBROSUS. This occurs most frequently in the lower lumbar region.	Disc Herniation,Disc Protrusion,Disc, Herniated,Disk Herniation,Disk Protrusion,Disk, Herniated,Intervertebral Disc Herniation,Intervertebral Disc Protrusion,Intervertebral Disk Displacement,Intervertebral Disk Herniation,Intervertebral Disk Protrusion,Prolapsed Disk,Protruded Disc,Protruded Disk,Slipped Disk,Disk Prolapse,Herniated Disc,Herniated Disk,Prolapsed Disc,Slipped Disc,Disc Displacement, Intervertebral,Disc Herniations,Disc Protrusion, Intervertebral,Disc Protrusions,Disc Protrusions, Intervertebral,Disc, Prolapsed,Disc, Protruded,Disc, Slipped,Discs, Protruded,Disk Displacement, Intervertebral,Disk Herniations,Disk Prolapses,Disk Protrusion, Intervertebral,Disk Protrusions,Disk, Prolapsed,Disk, Protruded,Disk, Slipped,Herniated Discs,Herniated Disks,Herniation, Disc,Herniation, Disk,Herniation, Intervertebral Disc,Herniation, Intervertebral Disk,Intervertebral Disc Displacements,Intervertebral Disc Herniations,Intervertebral Disc Protrusions,Intervertebral Disk Displacements,Intervertebral Disk Herniations,Intervertebral Disk Protrusions,Prolapse, Disk,Prolapsed Discs,Prolapsed Disks,Prolapses, Disk,Protruded Discs,Protruded Disks,Protrusion, Disc,Protrusion, Disk,Protrusion, Intervertebral Disc,Protrusion, Intervertebral Disk,Protrusions, Intervertebral Disk,Slipped Discs,Slipped Disks
D008161	Lumbosacral Region	Region of the back including the LUMBAR VERTEBRAE, SACRUM, and nearby structures.	Lumbar Region,Lumbar Regions,Lumbosacral Regions,Region, Lumbar,Region, Lumbosacral,Regions, Lumbar,Regions, Lumbosacral
D009192	Myelography	X-ray visualization of the spinal cord following injection of contrast medium into the spinal arachnoid space.	Cisternography, Myelographic,Myelographic Cisternography,Cisternographies, Myelographic,Myelographic Cisternographies,Myelographies
D009408	Nerve Compression Syndromes	Mechanical compression of nerves or nerve roots from internal or external causes. These may result in a conduction block to nerve impulses (due to MYELIN SHEATH dysfunction) or axonal loss. The nerve and nerve sheath injuries may be caused by ISCHEMIA; INFLAMMATION; or a direct mechanical effect.	Entrapment Neuropathies,Nerve Entrapments,External Nerve Compression Syndromes,Internal Nerve Compression Syndromes,Nerve Compression Syndromes, External,Nerve Compression Syndromes, Internal,Compression Syndrome, Nerve,Compression Syndromes, Nerve,Entrapment, Nerve,Entrapments, Nerve,Nerve Compression Syndrome,Nerve Entrapment,Neuropathies, Entrapment,Neuropathy, Entrapment,Syndrome, Nerve Compression,Syndromes, Nerve Compression
D005188	False Negative Reactions	Negative test results in subjects who possess the attribute for which the test is conducted. The labeling of diseased persons as healthy when screening in the detection of disease. (Last, A Dictionary of Epidemiology, 2d ed)	False Negative Reaction,Reaction, False Negative,Reactions, False Negative
D005189	False Positive Reactions	Positive test results in subjects who do not possess the attribute for which the test is conducted. The labeling of healthy persons as diseased when screening in the detection of disease. (Last, A Dictionary of Epidemiology, 2d ed)	False Positive Reaction,Positive Reaction, False,Positive Reactions, False,Reaction, False Positive,Reactions, False Positive
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013126	Spinal Nerve Roots	Paired bundles of NERVE FIBERS entering and leaving the SPINAL CORD at each segment. The dorsal and ventral nerve roots join to form the mixed segmental spinal nerves. The dorsal roots are generally afferent, formed by the central projections of the spinal (dorsal root) ganglia sensory cells, and the ventral roots are efferent, comprising the axons of spinal motor and PREGANGLIONIC AUTONOMIC FIBERS.	Dorsal Roots,Spinal Roots,Ventral Roots,Dorsal Root,Nerve Root, Spinal,Nerve Roots, Spinal,Root, Dorsal,Root, Spinal,Root, Spinal Nerve,Root, Ventral,Roots, Dorsal,Roots, Spinal,Roots, Spinal Nerve,Roots, Ventral,Spinal Nerve Root,Spinal Root,Ventral Root
D013679	Technology, Radiologic	The application of scientific knowledge or technology to the field of radiology. The applications center mostly around x-ray or radioisotopes for diagnostic and therapeutic purposes but the technological applications of any radiation or radiologic procedure is within the scope of radiologic technology.	Radiologic Technology,Technology, Radiological,Radiological Technology