Neurochirurgia
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An unusual case of spontaneous spinal subarachnoid haematoma (SAH) is reported. A 42-year-old man developed sudden and excruciating back pain immediately after sitting up from a supine position, and meningeal irritation and spinal cord compression signs of then appeared. ⋯ After prompt surgical evacuation neurological function was totally regained. Physiopathology and diagnosis are discussed with reference to similar cases in literature.