“…So perhaps the very high incidence of HNT in our cohort of patients was not related to the presence of 4 or more unilateral RA but had more to do with the fact that these were selected patients with cardiovascular disease who are often hypertensive. The mean lumen diameter and area of the four RA were significantly smaller than one or two contralateral RA and smaller than those in the historical study on the deceased [4]. However, it probably has no influence on kidney perfusion as both longitudinal dimensions, kidney volume, and parenchyma thickness were comparable on both sides.…”