RT Book, Section A1 Schmitt, Eric R. A1 Gausche-Hill, Marianne A2 Schafermeyer, Robert A2 Tenenbein, Milton A2 Macias, Charles G. A2 Sharieff, Ghazala Q. A2 Yamamoto, Loren G. SR Print(0) ID 1105684459 T1 Male Genitourinary Problems T2 Strange and Schafermeyer's Pediatric Emergency Medicine, 4e YR 2014 FD 2014 PB McGraw-Hill Education PP New York, NY SN 978-0-07-182926-7 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1105684459 RD 2024/04/20 AB Acute scrotal pain is usually caused by testicular torsion, epididymitis, or torsion of the appendix testis.Epididymitis is often caused by viral infections; however, bacterial urinary tract infections must be evaluated for in young children and sexually transmitted disease in adolescents.Persistent scrotal swelling and a “bag of worms” appearance indicates possible obstruction from tumor.Priapism can be divided into two mechanisms: low-flow or ischemic as in sickle cell vaso-occlusion and high-flow or engorgement.