52 year old male patient with new onset of renal failure. Pre-renal picture of FE urea concerning for renal artery stenosis or hypovolemia. Evaluate for hydronephrosis, echogenicity, and/or renal artery stenosis. ULTRASOUND KIDNEYSRIGHT KIDNEY: The right kidney measures 10.3 cm in length. Renal cortical echogenicity is within normal limits. No evidence of hydronephrosis.LEFT KIDNEY: The left kidney measures 10.4 cm in length. Renal cortical echogenicity is within normal limits. No evidence of hydronephrosis. Two subcentimeter hyperechoic foci within the left upper pole are noted.OTHER: The bladder is decompressed.
1. No evidence of hydronephrosis and patent bilateral renal arteries.2. Two subcentimeter hyperechoic foci within the left upper pole; follow up ultrasound is recommended in 6 months to confirm stability.