====== Synovial cyst ====== A synovial cyst is a fluid-filled sac having a synovial lining membrane in the spine. see [[Juxtafacet cyst]]. ====Synovial Cyst of the spine==== Synovial [[cyst]]s in the spine occur predominantly in the lumbar as compared to thoracic and cervical areas ((Freidberg SR, Fellows T, Thomas CB, Mancall AC. Experience with symptomatic spinal epidural cysts. Neurosurgery. 1994 Jun;34(6):989-93; discussion 993. PubMed PMID: 8084409. )). see [[Lumbar synovial cyst]] see [[Cervical synovial cyst]] see [[Sacral synovial cyst]] ====Differential diagnosis==== [[Ganglion cyst]]. The distinction between the two may be difficult ((Freidberg SR, Fellows T, Thomas CB, Mancall AC. Experience with symptomatic spinal epidural cysts. Neurosurgery. 1994 Jun;34(6):989-93; discussion 993. PubMed PMID: 8084409. )) possibly owing in part the fact that fibroblasts in ganglion cysts may form an incomplete synovial-like lining ((Soren A. Pathogenesis and treatment of ganglion. Clin Orthop Relat Res. 1966 Sep-Oct;48:173-9. PubMed PMID: 5957467. )).