Surveillance left arm brachiobrachial fistulagram before intervention. Observe the critical juxta-anastomotic stenosis of the brachial vein and the saccular aneurysms distal to the stenosis. The purple arrow identifies the left brachial artery, the red arrow points at 2 juxtaposed aneurysms of the left brachial vein, while the red arrow identifies the juxta-anastomotic stenosis of the vein.