[Colonoscopy in the diagnosis of hemorrhage in the colorectal area].

The authors submit a retrospective study based on their own material, pertaining to experience with coloscopies in acute and chronic haemorrhage from the colorectal region. They analyze the causes of haemorrhage, and give a detailed histological classification in particular of polyps as possible precancerous conditions. They also compare the clinical value of coloscopy with other examination methods according to their own experience and data in the literature.