Spinal chronic subdural hematoma.
Although chronic subdural hematomas are rare, they are likely to be more frequently reported as the clinical and magnetic resonance imaging characteristics become defined. Chronic spinal subdural hematomas (CSSDH) are extremely rare; these hematomas are frequently spontaneous and related to minor trauma. Although generally said to carry a poor prognosis, CSSDH can be a reversible cause of paraplegia. This article reviews the history, classification, clinical presentation, and treatment of CSSDH.