Occult and obscure gastrointestinal bleeding:Causes and diagnostic approach in 2009

作     者：Giampaolo Bresci 

作者机构：UO GastroenterrologiaAOUPisanaPisa 56125Italy 

出 版 物：《World Journal of Gastrointestinal Endoscopy》 (世界胃肠内镜杂志（英文版）（电子版）)

年 卷 期：2009年第1卷第1期

页      面：3-6页

学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 10[医学] 

主　　题：Occult gastrointestinal bleeding Obscure gastrointestinal bleeding Bleeding Gastrointestinal endoscopy 

摘      要：Gastrointestinal bleeding can be obscure or occult(OGIB),the causes and diagnostic approach will be discussed in this *** evaluation of OGIB consists on a judicious search of the cause of bleeding,which should be guided by the clinical history and physical *** standard approach to patients with OGIB is to directly evaluate the gastrointestinal tract by endoscopy,abdominal computed tomography,angiography,radionuclide scanning,capsule *** source of OGIB can be identified in 85%-90%,no bleeding sites will be found in about 5%-10% of *** if the bleedings originating from the small bowel are not frequent in clinical practice(7.6% of all digestive haemorrhages,in our casuistry),they are notoriously difficult to *** spite of progress,however,a number of OGIB still remain problematic to deal with at present in the clinical context due to both the difficulty in exactly identifying the site and nature of the underlying source and the difficulty in applying affective and durable diagnostic approaches so no single technique has emerged as the most efficient way to evaluate OGIB.