Unilateral Presentation of Adult-Type Polycystic Kidney Disease in Children

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Abstract
Adult polycystic kidney disease is characterized by autosomal dominant inheritance, diffuse bilateral cystic kidney disease and onset during the young adult years. Relatively few cases of adult-type polycystic kidney disease in children have been reported. We describe a 4-year-old girl who appeared to have multiple, unilateral simple renal cysts by excretory urography and ultrasonography. There was no known familial renal cystic disease. When renal histology was consistent with adult-type polycystic kidney disease, screening nephrosonograms revealed that the mother also had the disease. We review 10 published cases of unilateral presentation of adult-type polycystic kidney disease in children. This report emphasizes the necessity of screening studies in parents of children with diffuse unilateral or bilateral cystic renal disease. Awareness of the unexpected unilateral presentation of adult-type polycystic kidney disease in children may allow a nonoperative diagnosis to be made.