Severe back pain and left sciatica
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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.
Etiology 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.
- Hwang JH, Park IS, Kang DH et-al. Discal cyst of the lumbar spine. J Korean Neurosurg Soc. 01;44 (4): 262-4. doi:10.3340/jkns.2008.44.4.262 - Free text at pubmed - Pubmed citation
- Alex Singleton. Lumbar Discal Cyst in an Elite Athlete: A Rare Case Report in North America. 27;8 (1): .
- Jeong GK, Bendo JA. Lumbar intervertebral disc cyst as a cause of radiculopathy. Spine J. 2003;3 (3): 242-6. Pubmed citation