Abstract 1. 1. During the period 1947 to 1966, there have been 10 cases of renovascular hypertension seen at The Children's Hospital Medical Center. 2. 2. Nine children underwent operations and only 1, who had severe bilateral pyelonephritis, remained hypertensive postoperatively. Two patients died; one from metastatic sarcoma and the other from delayed uncontrollable hemorrhage following the insertion of a by-pass graft to correct a coarctation of the abdominal aorta. 3. 3. The aortogram is the most useful diagnostic study in the pédiatric age group; this test demonstrated the lesion each time it was performed. 4. 4. Renal revascularization procedures should be attempted before nephrectomy is carried out in order to preserve renal function. In this series the 4 attempts at revas-cularization were unsuccessful; the reasons for this were discussed.