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The kidneys are enlarged for age (right = 8.3 x 4.3 x 4.0 cm, left = 9.1 x 3.5 x 3.5 cm). Multiple small cysts located in the medulla and corticomedullary junctions, with sparing of the cortices. Scattered punctate calcifications in the medulla. Cortical echogenicity is increased. No ectasia.