Magnetic resonance imaging of entrapment of lumbar nerve roots in spondylolytic spondylolisthesis.

1994 ◽  
Vol 76 (11) ◽  
pp. 1643-1648 ◽  
Author(s):  
J R Jinkins ◽  
A Rauch
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Nerve Roots ◽  
Spondylolytic Spondylolisthesis

scholarly journals Redundant nerve roots of the cauda equina: review of the literature

2012 ◽  
Vol 45 (3) ◽  
pp. 155-159 ◽  
Author(s):  
Marcello Henrique Nogueira-Barbosa ◽  
Leonor Garbin Savarese ◽  
Carlos Fernando Pereira da Silva Herrero ◽  
Helton Luiz Aparecido Defino
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cauda Equina ◽  
Imaging Method ◽  
Resonance Imaging ◽  
Nerve Roots ◽  
Canal Stenosis ◽  
Close Relationship ◽  
The Moment ◽  
Lumbar Spinal

In imaging diagnosis, redundant nerve roots of the cauda equina are characterized by the presence of elongated, enlarged and tortuous nerve roots in close relationship with a high-grade lumbar spinal canal stenosis. This is not an independent entity, but it is believed to be a consequence of the chronic compression at the level of the lumbar canal stenosis and thus may be part of the natural history of lumbar spinal stenosis. The present paper is aimed at reviewing the histopathological, electrophysiological and imaging findings, particularly at magnetic resonance imaging, as well as the clinical meaning of this entity. As the current assessment of canal stenosis and root compression is preferably performed by means of magnetic resonance imaging, this is the imaging method by which the condition is identified. The recognition of redundant nerve roots at magnetic resonance imaging is important, particularly to avoid misdiagnosing other conditions such as intradural arteriovenous malformations. The literature approaching the clinical relevance of the presence of redundant nerve roots is controversial. There are articles suggesting that the pathological changes of the nerve roots are irreversible at the moment of diagnosis and therefore neurological symptoms are less likely to improve with surgical decompression, but such concept is not a consensus.

Giant sacral meningeal diverticula: surgical implications of the “thecal tip” sign

2006 ◽  
Vol 5 (5) ◽  
pp. 443-446 ◽  
Author(s):  
Frank Feigenbaum ◽  
Fraser C. Henderson
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Operative Technique ◽  
Spinal Nerve ◽  
Surgical Anatomy ◽  
Spinal Nerve Roots ◽  
Resonance Imaging ◽  
Nerve Roots

✓ The surgical anatomy of giant sacral meningeal diverticula varies greatly depending on whether they develop ventral or dorsal to the thecal sac and spinal nerve roots. The ability to distinguish between the two lesion types preoperatively is therefore advantageous. The authors present a method of distinguishing ventral from dorsal meningeal diverticula on magnetic resonance imaging using the “thecal tip sign.” They also describe the differences in operative technique required for resection of each type of diverticular cyst.

scholarly journals Langerhans Cell Histiocytosis of the Thoracic Spine in an Adult Presenting as Thoracic Radiculopathy

2021 ◽  
Vol 39 (4) ◽  
pp. 336-339
Author(s):  
Sooyoung Kim ◽  
Seung Min Kim ◽  
Eunah Shin ◽  
Jiman Hong
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Thoracic Spine ◽  
Langerhans Cell Histiocytosis ◽  
Bone Biopsy ◽  
Spinal Nerve ◽  
Langerhans Cell ◽  
Spinal Nerve Roots ◽  
Resonance Imaging ◽  
Nerve Roots

A 35-year-old man complained of right truncal pain around T7-8 dermatomal distribution and on examination, T7-8 spinal tenderness was observed. Magnetic resonance imaging showed osteolytic mass in T8 vertebral body without structural lesions involving spinal nerve roots. Dermatomal somatosensory evoked potentials (DSEP) were helpful in diagnosis with thoracic radiculopathy. Finally, Langerhans cell histiocytosis was confirmed in bone biopsy. Thoracic radiculopathy can be caused by various etiologies including bone tumor and DSEP is useful supplementary tool for diagnosing thoracic radiculopathy.

scholarly journals A case of neurosarcoidosis with swelling and gadolinium enhancement of spinal nerve roots on magnetic resonance imaging

2011 ◽  
Vol 51 (7) ◽  
pp. 483-486 ◽  
Author(s):  
Masato Ishibashi ◽  
Noriyuki Kimura ◽  
Yoshiaki Takahashi ◽  
Yuki Kimura ◽  
Yusuke Hazama ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spinal Nerve ◽  
Spinal Nerve Roots ◽  
Resonance Imaging ◽  
Gadolinium Enhancement ◽  
Nerve Roots

scholarly journals Value of ultrasound in the anatomical evaluation of the brachial plexus: correlation with magnetic resonance imaging

2018 ◽  
Vol 51 (6) ◽  
pp. 358-365 ◽  
Author(s):  
Wanda Chiyoko Iwakami Caldana ◽  
Sergio Keidi Kodaira ◽  
Conrado Furtado de Albuquerque Cavalcanti ◽  
Marcelo Bordalo Rodrigues ◽  
Osmar de Cassio Saito ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Brachial Plexus ◽  
Resonance Imaging ◽  
Nerve Roots ◽  
Cervical Nerve ◽  
High Level ◽  
Level Of Agreement ◽  
Cervical Nerve Roots ◽  
Trunk Segments

Abstract Objective: To assess the accuracy of ultrasound in the visualization of the brachial plexus and to determine the value of the method in comparison with that of magnetic resonance imaging (MRI). Materials and Methods: This was an anatomical study of the brachial plexuses of 20 asymptomatic adults (40 plexuses), comparing ultrasound and MRI in terms of their accuracy. In the ultrasound study, a high-frequency linear transducer was used, and a neurovascular coil was used in the MRI study. To estimate the frequency of visualization, the brachial plexus was divided into segments. Results: The cervical nerve roots, the upper trunk, and the middle trunk were the segments that were best visualized on ultrasound. On MRI, the degree of visualization was excellent for most of the segments. In the comparison between ultrasound and MRI, the C6, C7, upper trunk, and middle trunk segments showed equivalent degrees of visualization, with a high level of agreement between the two methods. Conclusion: In the brachial plexus, ultrasound can be used in the assessment of the cervical nerve roots, as well as of the upper and middle trunks, although it provides limited visualization of the remaining segments. Ultrasound and MRI showed a high level of agreement for the visualization of the C6, C7, and middle trunk segments.

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