A 55-year-old man admitted to the hospital because of complications of alcoholic cirrhosis and concurrent hepatitis C infection progressively develops an increase in serum blood
urea nitrogen and creatinine levels, followed closely with urine output of <300 mL/day. Urinalysis reveals a sodium concentration of 5 mEq/L and the presence of benign urinary sediment. No proteinuria or hematuria is present. Imaging of this patient’s kidneys is likely to reveal which of the following?
(A) Enlarged cystic kidneys
(B) Enlarged kidneys with severe hydronephrosis
© Horseshoe kidneys
(D) Normal kidneys with “flea-bitten” infarcted appearance
(E) Normal size and shape