クローン病におけるダブルバルーン内視鏡下逆行性造影の実際

More than 70% of patients with Crohn's disease are likely to develop small bowel lesions and both the monitoring and the control of these lesions are directly linked to the QOL in patients. Therefore, in the management of Crohn's disease, it is necessary to evaluate the condition of the entire small bowel with high accuracy, using a simple technique with a low burden to the patient. Although there is no test or marker that meets all of these requirements, double-balloon enteroscopy has been widely used as one of the monitoring tools for small bowel lesions in Crohn's disease patients and sometimes for endoscopic dilations. In our departments, retrograde contrast through double-balloon enteroscopy is routinely performed in addition to normal observation of the enteroscopy and could assist in evaluating the deep small bowel lesions beyond the scope. In this article, we introduce the procedure and tips for retrograde contrast through double-balloon enteroscopy in patients with Crohn's disease.