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Posterior extradural migration of extruded thoracic and lumbar disc fragments: role of MRI

  • DIAGNOSTIC NEURORADIOLOGY
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Abstract

We report three patients with a sequestrated disc fragment posterior to the thecal sac. The affected disc was lumbar in two cases and thoracic in the third. Disc fragment migration is usually limited to the anterior extra dural space. Migration of a disc fragment behind the dural sac is seldom encountered. MRI appears to be the method of choice to make this diagnosis. The disc fragments gave low signal on T1- and slightly high signal on T2-weighted images and showed rim contrast enhancement. The differential diagnosis includes abscess, metastatic tumour and haematoma.

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Authors and Affiliations

  1. Department of Neuroradiology, CHU Hautepierre, F-67098 Strasbourg, France, , , , , , FR

    C. Neugroschl & J. L. Dietemann

  2. Department of Neurosurgery, CHU Hautepierre, F-67098 Strasbourg, France, , , , , , FR

    P. Kehrli, O. Ragragui & D. Maitrot

  3. Department of Neuroradiology, CHU Purpan, Place du Docteur Baylac, F-31059 Toulouse, France, , , , , , FR

    C. Manelfe

  4. Department of Neurosurgery, CHU Purpan, Place du Docteur Baylac, F-31059 Toulouse, France, , , , , , FR

    M. Gigaud

Authors
  1. C. Neugroschl
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  2. P. Kehrli
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  3. M. Gigaud
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  4. O. Ragragui
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  5. D. Maitrot
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  6. C. Manelfe
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  7. J. L. Dietemann
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Additional information

Received: 9 September 1998 Accepted: 8 February 1999

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Neugroschl, C., Kehrli, P., Gigaud, M. et al. Posterior extradural migration of extruded thoracic and lumbar disc fragments: role of MRI. Neuroradiology 41, 630–635 (1999). https://doi.org/10.1007/s002340050815

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  • DOI: https://doi.org/10.1007/s002340050815

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