The authors report the case of a 69-year old female with a persistent
history of low back pain. Plain lumbar radiographs, performed at symptom
initiation, revealed lumbar spondylolisthesis. Low back pain was
attributed to this, and the patient received conservative treatment with
partial relief of symptoms. Four years later, and as a result of acute
onset of radicular symptoms, a lumbar spine magnetic resonance imaging
scan was performed, revealing an epidural cystic lesion. The cyst was
removed, and histopathology revealed a synovial cyst
