Renal Agenesis :
Bilateral agenesis is not compatible with post natal life. Potter phenotype is the presentation in newborn with the typical facial abnormality. Unilateral agenesis is often diagnosed during the course of investigation. All newborn with single umbilical artery should be suspected for renal agenesis. The contralateral kidney goes into compensatory hypertrophy. Most cases are often associated with other anamolies. Children are at risk of hypertension and proteinuria. These IVP and isotopic renogram was from a boy who presented with persistent hypertension.