The authers report a case of spontaneous lumbar epidural hematoma in a 16-year-old boy who developed lumbago, paraparesis and gait disturbance over a six-day period. Metrizamide myelography and CT demonstrated the extradural mass lesion at the L3-4 level. MRI revealed a hyperintense mass on T1-weighted and T2-weighted sequences and it enabled to make diagnosis of epidural hematoma. The patient had full postsurgical recovery. We concludes MRI is the most helpful diagnosis modality for spinal epidural hematoma.