Minor duodenal papilla

The minor duodenal papilla is the opening of the accessory pancreatic duct into the descending second section of the duodenum.

Minor duodenal papilla
Details
Identifiers
Latinpapilla duodeni minor
TAA05.6.02.016
FMA15075
Anatomical terminology

Structure

The minor duodenal papilla is contained within the second part of the duodenum. It is situated 2 cm proximal to the major duodenal papilla, and thus 5–8 cm from the opening of the pylorus. The gastroduodenal artery lies posterior.[1]

Variation

The minor duodenal papilla may or may not contain a functioning sphincter and patent duct. When present, the sphincter is known as the sphincter of Helly, and the duct as the accessory 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 associated dermatomes.

Function

The duct is an embryological remnant, however in a small majority of people drains the pancreas.[1]

Development

The minor duodenal papilla represents the remnants of the opening of the accessory pancreatic duct, which drains the dorsal pancreatic bud during foetal development.

Clinical significance

When patent, the minor duodenal papilla may be associated with recurrent pancreatitis. This is particularly common in a subset of people, when the dorsal pancreatic bud fails to fuse with the ventral pancreatic bud, a condition called pancreatic divisum,[3] :893 or when patent and ligated.[1]

History

The other names of minor duodenal papilla is Santorini's minor caruncle.

See also
This article uses anatomical terminology. For an overview, see Anatomical terminology.

References
  1. Skandalakis, editor in chief John E. (2004). Skandalakis' surgical anatomy : the embryologic and anatomic basis of modern surgery. Athens, Greece: PMP. pp. Chapter 16: Small Intestine. ISBN 9603990744.CS1 maint: extra text: authors list (link)
  2. Skandalakis, editor in chief John E. (2004). Skandalakis' surgical anatomy : the embryologic and anatomic basis of modern surgery. Athens, Greece: PMP. pp. Chapter 21. Pancreas. ISBN 9603990744.CS1 maint: extra text: authors list (link)
  3. Colledge, Nicki R.; Walker, Brian R.; Ralston, Stuart H. (editors); Britton, Robert (illustrator) (2010). Davidson's principles and practice of medicine (21st ed.). Edinburgh: Churchill Livingstone/Elsevier. ISBN 978-0-7020-3084-0.CS1 maint: extra text: authors list (link)
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