A 4-year-old boy presented with sudden onset of fever, pyuria, and bac
teriuria, ultrasound revealed left hydronephrosis and hydroureter. A p
lain abdominal radiograph and excretory urogram show-ed a giant ureter
al stone measuring 9 cm causing ureteral obstruction. Underlying anato
mic or metabolic abnormalities were not detected. Extraction of the st
one resulted in complete disappearance of the hydronephrosis and hydro
ureter.