Flank pain / Lisa Lihuan Wang and Sherry Teefey -- Renal failure / John J. Cronan -- Hematuria / Robert L. Bree -- Sonography in acute abdominal trauma / W. Dennis Foley -- Diagnosis with acute scrotal pain / Thomas A. Stavros and Cynthia L. Rapp -- Erectile dysfunction / Harvey L. Nisenbaum and Steven C. Horii -- Sonography of urinary tract infections in children / Harriet J. Paltiel -- Right lower quadrant pain: ruling out appendicitis / Lawrence C. Chow and R. Jeffrey Brooke Jr. -- Hypertension and bruit / Laurence Needleman -- Elevated PSA and/or abnormal prostate physical examination / Ulrike M. Hamper -- Intraoperative ultrasound / Robert A. Kane -- Leg swelling with pain or edema / Edward I. Bluth -- Biopsy, drainage, and percutaneous treatment of a mass / Gerald D. Dodd III and Hayden Head