Abstract

• The etiology of congenital hydronphrosis are obstruction of urinary tract, underdevelpment of ureteral musculature and abnormality of nerve innervation in fetal life. The onset of symptom congenital hydronephrosis appears later and there are irreversible change of renal paranchyme in most cases. Therefore require early diagnosis and treatment. We experienced a case of congenital hydronephrosis containing about 1,500cc of hydronephorotic fluid, which was caused by congenital ureteropelvic junction stenosis and report this case with review of lite rature.