Abstract
Duodenal papilla is one of the important places among the body physiologically and morphologically, because bile and pancreatic juice are excreted into the duodenum via its narrow orifice.
There are various pathological conditions in the duodenal papilla, such as so-called overreplacement of ampullary mucosa, parapapillary diverticula, papillitis, and ampuilary carcinoma occurred.
In this article, some topics mentioned above were described.
