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B-mode ultrasound images of (A) normal kidney, (B) enlarged and echogenic kidney with loss of differentiation between cortical, medullary and sinus fat compartments in a case with acute kidney injury, (C) small, slightly echogenic kidney with thin cortex in a patient with chronic kidney disease and (D) normal size but echogenic kidney with a single simple cyst in a patient with chronic kidney disease secondary to diabetic nephropathy.
