Multicystic dysplastic kidney is a common type of renal cystic disease, and it is a cause of an abdominal mass in infants.

[5] When a diagnosis of multicystic kidney is made in utero by ultrasound, the disease is found to be bilateral in many cases.

Because the high incidence of reflux, voiding cystourethrography usually has been considered advisable in all newborns with a multicystic kidney.

Mean age at the time of antenatal diagnosis is about 28 weeks[3] A microscopic analysis of urine in individuals with probable multicystic dysplastic kidney should be done.

[12][13] In regard to the epidemiology of multicystic dysplasia kidney, the incidence of MCDK is estimated to be 1 in every 4,000 live births, making it rare in terms of the general population.