Naveau S, Aubert A
Service d'hépato-gastro-entérologie, Hôpital Antoine-Béclère, Clamart.
Rev Prat. 1995 Nov 15;45(18):2313-8.
Digestive bleeding undiagnosed by conventional endoscopies occurs in about 5% of the patients with gastro-intestinal bleeding. Vascular ectasias are the most common cause. More than half of these tumors are benign. Meckel's diverticulum is the cause of bleeding in two thirds of men under the age of 30. Hemorrhage from the biliary tree or pancreatic duct occurs more often in patients with a suggestive history. According to the abundance and the cause of hemorrhage numerous investigations can be undertaken and the diagnostic value of new endoscopic methods (enteroscopy, endoscopic ultrasonography) must be assessed.
常规内镜检查未能诊断出的消化性出血约发生在5%的胃肠道出血患者中。血管扩张是最常见的原因。这些肿瘤中超过一半是良性的。梅克尔憩室是30岁以下男性三分之二出血病例的病因。有提示性病史的患者更常发生来自胆管或胰管的出血。根据出血的程度和原因，可以进行多种检查，并且必须评估新的内镜检查方法（小肠镜检查、内镜超声检查）的诊断价值。
