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Foraminal synovial cyst associated with ankylosing spondylitis.

Heyun Sung Kim¹, Chang Il Ju, Seok Won Kim

¹Department of Internal Medicine, College of Medicine, Chosun University, Gwangju, Korea.

Journal of Korean Neurosurgical Society

|September 6, 2011

Summary

Ankylosing spondylitis (AS) can be linked to spinal issues. This case highlights a rare foraminal synovial cyst in a patient with AS and a stress fracture, successfully treated with surgery.

Keywords:

Ankylosing spondylitis Synovial cyst

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Area of Science:

Orthopedics
Neurosurgery
Rheumatology

Background:

Ankylosing spondylitis (AS) commonly causes spinal inflammation and fractures.
Intraspinal synovial cysts are rarely reported in association with AS.

Observation:

A 55-year-old male with a history of AS presented with back pain and radiculopathy.
Imaging revealed a foraminal cystic lesion at L2-L3, associated with aggravated kyphosis and a posterior element stress fracture.

Findings:

A synovial cyst originating from the L2-L3 facet joint was surgically excised.
Pathological examination confirmed the cystic lesion as a synovial cyst.
The patient experienced immediate symptom resolution post-surgery.

Implications:

This case expands the known complications of AS to include intraspinal synovial cysts.
It underscores the importance of considering rare diagnoses in AS patients with persistent or new neurological symptoms.
Surgical management of these cysts can lead to significant symptom improvement.