Spinal subarachnoid hemorrhage during myelography

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Abstract
Neoplasms of the conus medullaris and cauda equina cause subarachnoid hemorrhage (SAH). In such instances, the hemorrhage was the presenting symptom. A patient with a neurofibroma at T12-L1 experienced spinal SAH during myelography for suspected lumbar disc disease. The roentgenograms showing the lesion itself first and the subarachnoid clot subsequently may be unique. The cause of hemorrhage in this patient may have been the shearing of bridging capsular veins because of diminished CSF pressure below the almost obstructing lesion.