Subarachnoid hemorrhage due to a spinal neurinoma.

A rare observation of spinal neurinoma associated with subarachnoid hemorrhage is reported and the other 12 cases in the literature are reviewed. The extramedullary location of the tumor and the feeble arachnoidal attachments to the spinal cord favor subarachnoidal bleeding in these cases. When the meningeal signs are evident and signs of spinal cord impairment are still unclear, an intracranial origin of the bleeding must be excluded. In doubtful cases, selective spinal angiography is useful in the differential diagnosis between a bleeding spinal tumor and an arteriovenous malformation of the spinal cord.