POSTOPERATIVE DIURESIS RENOGRAPHY AND ULTRASOUND IN PATIENTS UNDERGOING PYELOPLASTY - PREDICTORS OF SURGICAL OUTCOME

The authors reviewed 50 pediatric patients (56 renal units) who underw ent pyeloplasty and had serial preoperative and postoperative diuresis renogram and ultrasound studies. Of those patients that clinically im proved with surgery, 73% and 91% showed improved renographic patterns in postoperative studies at 3 and 12 months, respectively. Ultrasound demonstrated more gradual improvement in grade and pelvic diameters ov er longer study intervals. Diuresis renography is an excellent predict or of surgical outcome within 3 months of pyeloplasty and showed chang e well in advance of that seen on ultrasound. Sonography is better sui ted to longer term evaluation of grade, pelvic diameter, and renal siz e.