抄録
Two cases of choledochoduodenal fistulas were reported, and findings of duodenofiberscopic obser-vations were described. In case 1 the fistula was atributed to common duct calculi, and duodenofiber-scopy revealed a markedly swollen papilla of Vater with redness and edema, and a prominent, swollen longitudinal fold. The fistula was found on the lon-gitudinal fold of the papilla. In case 2 upper gastro-intestinal series showed air and barium reflux into the biliary tract. Duodenofiberscopy revealed a fistula on the outside of the longitudinal fold of the papilla. In both cases contrast medium was injected through the fistula, and retrograde cholangiogram was obtained. There are few reports on the endoscopic obser-vation of internal biliary fistula. Duodenofiberscopic examinatoin should be made in cases in which air or gas shadows within the biliary tract on the radio-gram of the abdomen or barium reflux into the bile duct on upper gastrintestinal series were found.
