Outcome of Multi-Cystic Dysplastic Kidneys in Children

BACKGROUND: Renal cystic diseases are important causes of chronic kidney disease (CKD). OBJECTIVES: We report the pattern of renal cystic disease in children and evaluate the outcome of children with multicystic dysplastic kidney (MCDK). PATIENTS AND METHODS: Retrospective study of all children with cystic kidney diseases at King Abdulaziz University hospital from 2006 to 2014. RESULTS: Total of 55 children (30 males); 25 MCDK, 22 polycystic kidney diseases (PKD), 4 nephronophthises and 4 renal cysts. Consanguinity was positive in 96.2%. MCDK and simple renal cyst patients had good renal function while PKD and nephronophthisis developed renal impairment. Most MCKD were diagnosed ante-natally, 16 of them were followed up for 3.4 (1.97) year. Their last creatinine was 33.9 (13.5) umol/L. MCDK was spontaneously involuted at mean age of 2.6 (1.3) years in 56%. CONCLUSIONS: MCDK is the commonest cystic renal disease and diagnosed ante-natally in the majority of cases. It has a good prognosis.