Comparison of the accuracy of interventional radiology, diuretic ultrasonography and radionucleids studies in prediction of the prognosis of radiologically non functioning obstructed kidney

ABSTRACT

Twenty eight patients of unilateral radiologically non functioning obstructed kidneys were studied before treatment, and, after relieve of obstruction, by different radiological and imaging methods i.e. ultrasonography with diuretic ultrasound, radionucleides study, antegrade urography, retrogrode urography and laboratory investigations [Osmolality of urine, urinary ph, and split renal clearance]. The patients examined by I.V.U. after relieve of obstruction by 2 months and 4 months. Eight patients performed nephrectomy because of pyonephrosis and advanced back pressure noted by ultrasonography. The remaining 20 patients showed. after treatment good function in 10/20 [50%] patients, moderate function in 6/20 [30%] patients and non function in 4/ 20 [20%]. It was noted that the split clearance is the most accurate method with 100% accuracy. The renography and diuretic renography shows 100% accuracy in cases of dilated non obstructed and non perfused kidneys. The accuracy of ultrasonography and diuretic ultrasonography was 100% in mild hydronephrosis and when the change in pelvic surface area was from 60-80% after diuretic by 15 minutes