Faces of Renal Failure Chronic Renal Failure Bilateral Renal Artery Stenosis CT – Striated NephrogramCT scan in the coronal plane in a 61year old female with bilateral severe renal artery calcific atherosclerosis (upper panel) The lower panel shows a right kidney that is in excretory phase (contrast noted in the upper pole) with the upper pole parenchyma noted in nephrographic phase and a lower pole demonstrates a striated nephrogram. The left kidney is non-functioning.Ashley Davidoff MD TheCommonVein.net 013Lu 136068c