Disc sequestration

Sequestrated disc, also referred to as a free disc fragment, corresponds to extruded disc material that has no continuity with the parent disc and is displaced away from the site of extrusion. By definition, it corresponds to a subtype of disc extrusion.

The term "migrated" disc refers only to position and not to continuity. So, this term can be used when referring both to extruded disc that still have continuity and sequestrated disc (e.g. disc extrusion migrated caudally, sequestrated disc migrated cranially). 


Spine
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Article Information

rID: 43528
Section: Pathology
Tag: refs
Synonyms or Alternate Spellings:
  • Intervertebral disc sequestration
  • Sequestrated disc
  • Free disc fragment
  • Fragment of disc
  • Sequestration of disc
  • Sequestration of inververtebral disc

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Cases and Figures

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    Sagittal T2-Weigh...
    Case 1: on sagittal T2
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    Case 2: sequestered disc extrusion
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