GANGLION CYST OF THE POSTERIOR LONGITUDINAL LIGAMENT CAUSING LUMBAR RADICULOPATHY - CASE-REPORT

We describe a man aged 26 years who presented with a neurological synd rome, which was found on lumbar radioculopathy to be due to a ganglion cyst originating from the posterior longitudinal ligament. Eased on M RI findings, a cystic lesion was suspected, a round lesion at L4 level with no connection to the adjacent facet or to the dura matter. Durin g surgery, a liquid-containing cystic lesion was found to originate fr om the posterior longitudinal ligament at L4 level. The resected cyst was diagnosed histologically as a ganglion cyst. A complete cure was e stablished after surgery and no recurrence was noted at a follow-up 1. 7 years postoperatively. A ganglion cyst of the posterior longitudinal ligament should be considered in the differential diagnosis of a cyst in the lumbar region causing neurological complications.