We report the first extraforaminal location of a lumbar discal cyst. The patient was treated by hemilaminectomy, arthrectomy, cyst resection, and unilateral arthrodesis, achieving complete release of the nerve root. Extraforaminal lumbar discal cyst may represent an unexpected cause of sciatic pain with favorable outcome after surgical resection.
Keywords: Extraforaminal compression; Low-back pain; Lumbar surgery; Rare cause of radiculopathy; Sciatic pain.
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