Hydronephrosis secondary to colonic intussusception.

We report on a two-month-old infant with bowel obstruction found to be secondary to a colonic intussusception (proved and reduced by barium enema). The finding of renal insufficiency prompted ultrasonographic renal evaluation uncovering a unilateral hydronephrosis. After resolution of the intussusception and hydration, the infant's renal functions normalized. Follow-up ultrasound study and renal scan showed resolution of the hydronephrosis. We conclude that colonic intussusception can cause renal obstruction.