Renal vein stenosis is a significant reason for optional hypertension. Respective non-atherosclerotic non-dysplastic renal supply route stenosis can be seen following pressure of the renal conduits by diaphragmatic crura/middle arcuate tendon or outside masses or sinewy groups. At no other time, dynamic respective proximal stenosis, another substance has been accounted for. The treatment is obscure. The learning point is that the patients experiencing angiographic screening for renovascular hypertension ought to experience 'breath in breath out' test so as to picture renal vein movement.