ABSTRACT
This experimental work was done to see the hydronephrotic changes in kidney of completely ligated ureter. Five young healthy mongrel dogs weighing 20-25 kg. were induced in this study. They were kept on standard diet and free access to water. Ultrasound of experimental and control kidney was done for the measurement of hydronephrosis and changes in control kidney. On day 1 there was fullness of pelvis and calyces in experimental kidney on day 3 minimal to mild degree of hydronephrotic changes observed on day 5th mild to moderate degree of hydronephrosis was found. At the end of one week hydronephrosis was marked to severe and contralateral kidney was hypertrophied. At the end of the experimental work dogs were sacrificed and bilateral nephrectomy was done to observe the gross and microscopic changes in both kidney