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近年来,由于新的诊断技术如选择性血管造影、纤维结肠镜(以下简称纤结镜)检查以及放射性同位素扫描的广泛应用,使下消化道出血病例的诊断阳性率不断提高。某些血管病变如血管发育不良,在过去被认为系少见的下消化道出血原因,现已被证实为老年人较常见的病因。新的治疗方法亦在不断取得进展。现将这些进展综述于下。病因 1.病因和年龄:下消化道出血的病因和年龄有一定关系。据Boley等统计,各种不同年龄组常见的出血原因如下。
In recent years, due to the new diagnostic techniques such as selective angiography, colonoscopy (hereinafter referred to as fibrinoscopy) and radioactive isotope scan of the wide range of applications, the diagnosis of lower gastrointestinal bleeding cases positive rate increased. Some of the vascular pathologies such as vascular dysplasia, a cause of lower gastrointestinal bleeding that has been considered infrequent in the past, have now been proven to be the more common cause of the elderly. New treatments are also making steady progress. These developments are summarized below. Etiology 1. Etiology and age: The cause of lower gastrointestinal bleeding and age have a certain relationship. According to Boley and other statistics, the common causes of bleeding in different age groups are as follows.