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World J Clin Cases. 2013 Dec 16;1(9):285-9. doi: 10.12998/wjcc.v1.i9.285.

Midline synovial and ganglion cysts causing neurogenic claudication.

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  • 1Jonathan Pindrik, Mohamed Macki, Mohamad Bydon, Ali Bydon, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, United States.

Abstract

Typically situated posterolateral in the spinal canal, intraspinal facet cysts often cause radicular symptoms. Rarely, the midline location of these synovial or ganglion cysts may cause thecal sac compression leading to neurogenic claudication or cauda equina syndrome. This article summarizes the clinical presentation, radiographic appearance, and management of three intraspinal, midline facet cysts. Three patients with symptomatic midline intraspinal facet cysts were retrospectively reviewed. Documented clinical visits, operative notes, histopathology reports, and imaging findings were investigated for each patient. One patient presented with neurogenic claudication while two patients developed partial, subacute cauda equina syndrome. All 3 patients initially responded favorably to lumbar decompression and midline cyst resection; however, one patient required surgical stabilization 8 mo later. Following the three case presentations, we performed a thorough literature search in order to identify articles describing intraspinal cystic lesions in lateral or midline locations. Midline intraspinal facet cysts represent an uncommon cause of lumbar stenosis and thecal sac compression. Such entities should enter the differential diagnosis of midline posterior cystic lesions. Midline cysts causing thecal sac compression respond favorably to lumbar surgical decompression and cyst resection. Though laminectomy is a commonly performed operation, stabilization may be required in cases of spondylolisthesis or instability.

KEYWORDS:

Claudication; Cyst; Facet; Ganglion; Intraspinal; Laminectomy; Midline; Neurogenic; Synovial

PMID:
24364023
[PubMed]
PMCID:
PMC3868712
Free PMC Article
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