Subarachnoid hemorrhage due to intraspinal tumors.

Five cases of subarachnoid hemorrhage arising from an intraspinal tumor are presented, Three of these were ependymomas in the region of the cauda equina. One was a neurofibroma at L1. The fifth was a hemangioblastoma in the upper lumbar region. The literature dealing with subarachnoid hemorrhage due to intraspinal lesions is reviewed. The majority of cases of spinal subarachnoid hemorrhage are due to arteriovenous malformations, but 50 cases in which the bleeding developed from a neoplasm have been reported.