Chapter 21 - Ultrasound Evaluation of the Renal System and the Bladder

Video 21-1. Hydronephrosis due to obstructive uropathy. Note widening of the renal collecting system and loss of the parenchymal thickness.
Video 21-2. Pyelonephritis with renal hyperemia.
Video 21-3. Xanthogranulomatous pyelonephritis (XGP). Note destructive hypoechoic mass in the renal parenchyma.
Video 21-4. Perinephric abscess. Note heterogeneous hypoechoic crescent-shaped fluid collection surrounding the kidney.
Video 21-5. Nephrolithiasis (Staghorn calculus). Note intensely hyperechoic linear and arching calculi with characteristic posterior acoustic shadowing.