[Double contrast examination of the afferent loop of the Billroth II stomach (author's transl)].

In 82% of all cases, special steps in the double-contrast examination of the Billroth II stomach make it possible to show the afferent loop. We report about the experience on 140 of these examinations. This method was specially successful before every reoperation, in the search for recurrent ulcer or a retained gastric antrum. The complete visualization of the afferent loop gives information about the anatomic relations and often the possibility to clear up troubles after Billroth II gastroenterostomy, especially when it is not possible to endoscopy the loop.