Transient global amnesia: complication of arterial DSA.

bleeding at the site of the puncture was prolonged, and laboratory tests showed thrombocytopenia. Repeat CT of the spine 8 days later failed to demonstrate previously noted increased densities of the hematoma. We suggest that the subarachnoid hematoma was caused by repeated spinal tap, abnormal coagulation , and possible engorged spinal vessels from a reactive process secondary to meningitis. C1-C2 puncture for myelography was avoided in this patient to prevent possible hematoma in the high cervical region and its grave consequences. Spinal CT is an essential study in cases with rapid progression of neurologic symptoms after traumatic spinal tap to rule out subarachnoid hematoma.