In 117 patients who have undergone endoscopic papillotomy (EPT) long term controls have been done. 51 were controlled in the hospital and 66 did answer a questionnaire. The mean time interval to the EPT was mean = 21.6 months. Nine out of every ten patients had no complaints. One third had minimal changes of laboratory dates, which can easily be explained by second diseases. With nearly no exception there was a large orifice to the common bile duct at the upper brim of the papilla. There was no bilioduodenal pressure gradient in 75%. Duodenobiliary reflux could be demonstrated in 25% and aerobilia in 65%. Although there was a massive bacteriobilia in all cases, no signs of cholangitis could be found in any patient. As a result, no unfavourable effects of the EPT became obvious during this follow-up study.