Vo NJ et al in their article entitled "Anatomic distribution of renal artery stenosis in children: implications for imaging" in Pediatr Radiol 2006 Jul 4; [Epub ahead of print] found that-
"Focal Renal Artery stenosis in their study group was distributed as follows 25% main renal artery, 50% 2nd order branch, 12.5% 3rd order branch, and 12.5% accessory renal artery. They concluded Hypertensive children without comorbid conditions who have RAS usually have single, focal branch artery stenoses. This distribution supports angiography in these patients because of its superior sensitivity in detecting branch vessel disease and its therapeutic role in percutaneous transluminal renal angioplasty."
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