[The posterior approach in the treatment of hydronephrosis in children. Apropos of 65 cases].

The Simon posterior surgical approach to the kidney is excellent for pyeloplasty in children. The technique is reviewed and the advantages and limitation are discussed. This procedure has advantages of direct anatomic approach and excellent exposure of ureteropelvic area. In the newborn, the oral intake can be performed on the evening of surgery because there is no operative peritoneal mobilization. The posterior approach is especially recommended in simultaneous bilateral pyeloplasty. With transverse skin incision, a very cosmetic scar is obtained.