Abstract:
STUDY DESIGN:A case of bilateral symptomatic facet joint synovial cysts arising in association with calcium pyrophosphate deposition disease is reported. OBJECTIVE:To present a previously unreported cause for symptomatic synovial cysts of the lumbar spine. SUMMARY OF BACKGROUND DATA:Synovial cysts of the facet joints occur most commonly in association with degenerative disease of the spine in older individuals. The association of these cysts with trauma, rheumatoid arthritis, spondylolysis, and kissing spinous processes also has been reported. These cysts can cause symptoms and signs from direct compression of the dura. Chondrocalcinosis has not been previously reported to cause symptomatic synovial cysts. METHODS:A 67-year-old woman presented with right lower limb sciatica caused by a right L4-L5 facet joint cyst, which resolved after surgical decompression. A year later, she presented with left lower limb sciatica caused by development of a new L4-L5 facet joint cyst, which also resolved after surgical decompression. RESULTS:Histopathologic examination of each cyst showed a cyst wall of fibrous tissue with synovial lining, inflammation, and granulation tissue. Examination of the tissue under polarized light showed positively birefringent, short blunt crystals of calcium pyrophosphate dihydrate. CONCLUSIONS:In patients with a history of gout or pseudogout, a rare possibility of a synovial cyst should be considered in the differential diagnosis during investigation for the cause of neural compression resulting in sciatic syndrome.
journal_name
Spine (Phila Pa 1976)journal_title
Spineauthors
Gadgil AA,Eisenstein SM,Darby A,Cassar Pullicino Vdoi
10.1097/00007632-200210010-00024keywords:
subject
Has Abstractpub_date
2002-10-01 00:00:00pages
E428-31issue
19eissn
0362-2436issn
1528-1159journal_volume
27pub_type
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