A patient had 3 episodes of spinal subarachnoid hemorrhage over 23 years and after that a perimedullary arteriovenous fistula (AVF) at the L2 level was detected fed by the anterior spinal artery which filled via the radiculomedullary artery from the right T9 intercostal artery. Large dilated veins drained mainly caudalward. Also intradural calcification was seen on CT at the L4 level. The fistula was embolized successfully. Control MR angiographies taken 4 and 8 months later had a lumbar intradural vessel which resembled the main draining vein of the spinal cord AVF, but was smaller. Spinal angiogram then showed that the spinal cord arteriovenous fistula was still occluded but at the L4 level there was a dural arteriovenous fistula fed by the left L4 lumbar artery, which was nor formerly examinated. The fistula drained cranialward via the same vein which had drained the spinal cord fistula caudalward but the vein was much smaller now. The fistula was at the same region as the calcification seen on CT.