Discal cyst

Case contributed by Dr Chris O'Donnell

Presentation

Severe back pain and left sciatica

Patient Data

Age: 35
Gender: Male
Modality: MRI

Large cyst apparently arising from the disc and not the facet joint or nerve sheath. Note minor pressure erosion on the posterior vertebra. It also compresses and distorts the adjacent proximal L5 nerve root sheath causing sciatica.

Case Discussion

Aetiology of these very rare cysts is uncertain but probably related to an annular fissure

Differential diagnosis includes synovial cyst, ganglion cyst, perineural cyst, extradural arachnoid cyst, and neuroma with cystic changes.

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Case Information

rID: 33308
Case created: 7th Jan 2015
Last edited: 21st Nov 2015
System: Spine
Inclusion in quiz mode: Included

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