Summary
The function of the minor duodenal papilla in humans was studied by duodenoscopy using
indigo carmine dye and a pH sensor. By this method it was possible to classify the
function of the minor papilla into three types: Type I: pancreatic juice excretion
without secretin administration; Type II: pancreatic juice excretion following secretin
administration: Type III: no pancreatic juice excretion despite secretin administration.
To determine the relative numbers of each type, the findings in 23 normal subjects
were compared with those in 26 patients with benign papillary stenosis. In normal
individuals, there were; 11 Type I, 4 Type II and 8 Type III, while in patients with
papillary stenosis we observed 20 Type I, 4 Type II and 2 Type III function, indicating
that in patients with papillary stenosis, the incidence of Type I minor papilla was
significantly high. From this it can be inferred that a minor papilla that does not
excrete pancreatic juice spontaneously may begin such excretion, if pancreatic duct
pressure persistently increases.
Key words:
Minor duodenal papilla - pH sensor - Indigo carmine dye - Papillary stenosis - Secretin
