Successful surgical removal of intrinsic medullar vascular malformation: a case presentation.

A 22-year-old man with an intrinsic arteriovenous malformation (AVM) of the medulla, who presented with recurrent subarachnoid hemorrhage and bulbar palsy was described. The successful total surgical removal of this AVM was demonstrated. The clinical, roentgenographic, pathological features and surgical approach of the brainstem vascular malformation were summarized.