A renal sonogram is performed. The finding of hypoechoic areas adjacent to the renal sinus is most consistent with:

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Hypoechoic areas adjacent to the renal sinus on a renal sonogram are most consistent with medullary pyramids. These structures are normal variants that appear as triangular, hypoechoic areas on ultrasound due to their composition and the way ultrasound waves interact with them.

A Renal Sonogram Is Performed