[Lumbar vertebral synovial cyst].
Intraspinal facet synovial cyst is an uncommon cause of low back pain and sciatica that should be recognised in patients who are symptomatic, in particular in the presence of degenerated facet joints. CT and MRI are diagnostic imaging modalities of choice. Arthrography remains an important procedure to confirm the diagnostic, as avoiding surgery is particularly valuable in older patients.
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