Ultrasound-guided facet joint injection to treat a spinal cyst.

Lumbar spinal cysts often present with backache and may be accompanied by lower extremity weakness as well as radiation pain if root compression occurs. The treatment regimens include anti-inflammatory drugs, physical therapy, procedures guided by fluoroscopy or computed tomography, and surgery. We report the case of a patient with a symptomatic lumbar spinal cyst at the L4-L5 facet joint. The symptoms immediately remitted after ultrasound-guided steroid-lidocaine injection into the L4-L5 facet joint. Magnetic resonance imaging follow up 4 months after injection showed complete resolution of the cyst.

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