ABSTRACT
The spinal subdural hematoma (SSDH) is a rare disease entity, but may have disastrous consequences. A 48-year-old man who underwent a craniotomy for a removal of acute traumatic subdural hematoma was referred to our hospital because of remnant hematoma and sustained headache. His mental state was clear and the score of Glasgow Coma Scale was 15. On 11days after admission, he complained of lumbago and radicular pain in the lower extremities. Lumbar magnetic resonance image (MRI) revealed subacute lumbosacral subdural hamatoma. A lumbar puncture was performed and about 20cc amount of dark liquefied hematoma was drained. His symptoms were improved and the SSDH was disappeared on follow-up MRI. This SSDH is assumed to be formed by the migratory movement of intracranial subdural hematoma under the influence of gravity, and spinal puncture is another preferable procedure in such cases of liquefied spinal hematoma.