[Myelographic diagnosis of an epidural arterio-venous fistula].

INTRODUCTION: Epidural arterio-venous fistulae are a little known clinical condition. They are probably commoner than is thought, since diagnosis and angiographic demonstration are difficult. CLINICAL CASE: We present the case of a 49 year old man with the clinical features of chronic myelo-radiculopathy with episodes of intermittent medullary claudication. This shows the use of myelography, which in certain cases allows clear detection of vascular structures which might otherwise pass unnoticed. CONCLUSIONS: One should think of this condition when compatible features are found and there is no other diagnosis, since if confirmed by myelography and/or magnetic resonance prior to angiographic study, it may benefit from embolization, which is an effective treatment for this.