金属硬管结肠镜:不能全面检查肠道把直径2厘米左右的金属硬管塞进肛肠,很多人会感觉不舒服,它就是金属硬管结肠镜,主要用来检查肛门距离直肠和乙状结肠交界处以下的大肠疾病。北京市肛肠医院外科副主任医师朱钢介绍说,金属硬管结肠镜不能检查全部肠道,检查部位受视野限制。在一些专科医院多用直径不到1厘米的 Metal hard tube colonoscopy: can not be a comprehensive examination of the intestinal tract about 2 cm in diameter metal tube into the anorectal, many people will feel uncomfortable, it is a metal hard tube colonoscopy, mainly used to check the anus from the rectum and sigmoid junction The following colon diseases. Zhu Gang, deputy chief physician of the Department of Surgery of Anorectal Hospital of Beijing, said that the metal hard tube colonoscopy can not check all the intestinal tract, and the examination site is limited by the visual field. In some specialized hospitals, the diameter is less than 1cm