Cystic Renal Disease -- Multicystic Dysplastic Kidney

Multicystic dysplastic kidney is the most common type of renal cystic disease, one of the most common cause of an abdominal mass in infants. A multicystic dysplastic kidney contains non-communicating multiple cystic spaces varying in size and has no functioning renal tissue. there is a possibly results that it from abnormal metanephros differentiation, probably due to disturbed connection of ureteric bud with renal blastema and abnormal division at the stage of metanephros.Contralateral renal and other concomitant abnormalities are important for the prognosis of children with MCDK.We reporting 2 cases.