| Minor duodenal papilla | |
|---|---|
| Details | |
| Identifiers | |
| Latin | papilla duodeni minor |
| TA98 | A05.6.02.016 |
| TA2 | 2956 |
| FMA | 15075 |
| Anatomical terminology | |
Theminor duodenal papilla is the opening of theaccessory pancreatic duct into the descending second section of theduodenum.
The minor duodenal papilla is contained within the second part of theduodenum. It is situated 2 cm proximal to themajor duodenal papilla, and thus 5–8 cm from the opening of thepylorus. Thegastroduodenal artery lies posterior.[1]
The minor duodenal papilla may or may not contain a functioningsphincter and patent duct. When present, the sphincter is known as thesphincter of Helly, and the duct as theaccessory pancreatic duct of Santorini. In 10% of people, the minor duodenal papilla is the prime duct for drainage of the pancreas,[1] although in others it may not be present at all.[2]
Pain from the region will be referred to the epigastric region of the abdomen due to its associateddermatomes.[citation needed]
The duct is an embryological remnant, however in a small majority of people drains the pancreas.[1] It is present in several domestic animals (e.g., dogs, cats and horses), being the sole drain of the pancreas in pigs and cows through the ductus pancreaticus accessorius.[3]
The minor duodenal papilla represents the remnants of the opening of theaccessory pancreatic duct, which drains thedorsal pancreatic bud duringfoetal development.
Whenpatent, the minor duodenal papilla may be associated with recurrentpancreatitis. This is particularly common in a subset of people, when the dorsal pancreatic bud fails to fuse with theventral pancreatic bud, a condition calledpancreatic divisum,[4]: 893 or when patent and ligated.[1]
The other names of minor duodenal papilla isSantorini's minorcaruncle.
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