Key Clinical Message
This case report highlights how rare spinal vascular diseases (spinal AVM) may be misinterpreted in conventional MRI. So we should be vigilant about spinal vascular diseases and conduct Digital subtraction angiography (DSA) when appropriate.
Keywords : Spinal Arteriovenous malformation, Spinal AVM, Perimedullary Spinal AV Fistula
Introduction :
Spinal arteriovenous malformations, along with cavernous malformations and spinal cord infarction, fall into a group of spinal vascular diseases. They are abnormal connections between arteries and veins of the spine which bypass the capillary network. Spinal arteriovenous fistula can be classified into Dural AVF, intramedullary glomus AVM, intramedullary juvenile AVM, Perimedullary AVF, and Extradural AVF according to a classification proposed by Takai et al.(1). We present a case of perimedullary AV Fistula, which was misinterpreted as myxopapillary ependymoma in MRI. However, it was correctly identified by histopathology and removed surgically.