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RADIOLOGY: KIDNEY: Case# 33662: AUTOSOMAL RECESSIVE POLYCYSTIC KIDNEY DISEASE. 2 month old male with oliguria and history of prenatal oligohydramnios. The kidneys are enlarged bilaterally and there is diffuse brightly increased renal parenchymal echogenicity. There is no distinct corticomedullary junction. No hydronephrosis is identified. Recessive type polycystic kidney disease is also known as infantile polycystic kidney disease. This is usually a combination of renal and hepatic manifestations and presents in infancy. Pathologically, the kidney has innumerable small cysts that represent dilatation of the collecting tubules. Liver involvement results in proliferation of bile ducts and mild periportal fibrosis. The diagnosis should be suspected when the kidneys are enlarged and hyperechoic and the bladder is small, especially in the prenatal setting of oligohydramnios.

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Peter Anderson
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