TY - CHAP M1 - Book, Section TI - Chapter 31. Acute Lower Gastrointestinal Bleeding A1 - Lee, Linda S. A1 - Saltzman, John R. A2 - Greenberger, Norton J. A2 - Blumberg, Richard S. A2 - Burakoff, Robert PY - 2012 T2 - CURRENT Diagnosis & Treatment: Gastroenterology, Hepatology, & Endoscopy, 2e AB - Diverticulosis, arteriovenous malformations, and ischemic colitis are the most common causes of lower GI bleeding.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. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/04/18 UR - accessmedicine.mhmedical.com/content.aspx?aid=55959534 ER -