Hematomyelia caused by ruptured intramedullary spinal artery aneurysm associated with extramedullary spinal arteriovenous fistula--case report.

A 53-year-old woman presented with a ruptured intramedullary aneurysmal dilatation fed by the anterior spinal artery associated with an arteriovenous malformation located in the ventral cervical spinal cord. She developed tetraparesis and respiratory dysfunction. The neurological deterioration was caused by hematomyelia due to the ruptured aneurysmal dilatation and progression of edema in the upper cervical spinal cord due to venous hypertension associated with additional hematoma in the medulla oblongata.