[Spontaneous spinal subarachnoidal hematoma--case report (author's transl)].

"Spontaneous intraspinal canal hematomas' are rare clinical conditions. These are classified as epidural, subdural and subarachnoid. Especially, subarachnoid hematoma is rare only two cases being reported by Bouzarth (1968). We have reported surgical treatment of a female with intraspinal canal subarachnoid hematoma. The patient presented with sudden onset of backpain, followed by paraplegia, sensory impairment and urinary retention. A lumbar tap revealed bloody CSF a complete block. A left vertebral angiography was normal. However, a myelography showed a filling defect at Th5. A laminectomy was performed and a subarachnoid hematoma at the Th1-5 level was completely removed. Etiology of the legion was not identified. The patient made an uneventful recovery. This case suggests that intraspinal canal hematoma needs an operation as soon as possible, especially with urinary retention.