Transthoracic Approach to an Intramedullary Vascular Malformation of the Thoracic Spinal Cord

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Abstract
A transthoracic approach with resection of a vertebral body was used to obtain access to an intramedullary vascular malformation of the thoracic spinal cord. The malformation consisted of three discrete intramedullary tufts of vessels fed by an abnormal branch of the anterior spinal artery arising from the T-9 intercostal artery. Although the abnormal branch of the anterior spinal artery did not appear to supply normal cord, the patient developed transient weakness postoperatively after occlusion of this artery. Follow-up angiography showed that one part of the malformation was still present and was fed by the T-6 intercostal artery.

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