RT Book, Section A1 Saltzman, John R. A1 Lee, Linda S. A2 Greenberger, Norton J. A2 Blumberg, Richard S. A2 Burakoff, Robert SR Print(0) ID 1119989191 T1 Acute Lower Gastrointestinal Bleeding T2 CURRENT Diagnosis & Treatment: Gastroenterology, Hepatology, & Endoscopy, 3e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071837729 LK accessmedicine.mhmedical.com/content.aspx?aid=1119989191 RD 2024/03/28 AB ESSENTIALS OF DIAGNOSISDiverticulosis, arteriovenous malformations (AVMs), ischemic colitis, and hemorrhoids are the most common causes of lower gastrointestinal (GI) bleeding (LGIB).Clinical presentation ranges from occult to overt bleeding.Endoscopic and radiologic tests can provide both diagnosis and therapy.Urgent colonoscopy may have increased diagnostic yield but does not clearly lead to decreased rates of rebleeding.