which parts of duodenum are retroperitoneal ?

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which parts of duodenum are retroperitoneal ?

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https://radiopaedia.org/articles/duodenum

https://radiopaedia.org/articles/duodenum
Duodenum | Radiology Reference Article | Radiopaedia.org
16 avr. 2023The duodenum begins at the duodenal bulb and ends at the ligament of Treitz, where it continues as the jejunum (this is often called the duodenojejunal (DJ) flexure). It is composed of four distinct parts. The first 2.5 cm of the first part of the duodenum is intraperitoneal. Meanwhile, the remaining the .

https://en.wikipedia.org/wiki/Duodenum

https://en.wikipedia.org/wiki/Duodenum
Duodenum – Wikipedia
In humans, the duodenum is a C-shaped hollow jointed tube, 25-38 centimetres (10-15 inches) in length, lying adjacent to the stomach (and connecting it to the small intestine). It is divided anatomically into four sections. The first part lies within the peritoneum but its other parts are retroperitoneal. [9] : 273.

https://www.kenhub.com / en / library / anatomy / the-duodenum

https://www.kenhub.com / en / library / anatomy / the-duodenum
Duodenum: Anatomy, histology, composition, functions | Kenhub
29 nov. 2023The duodenum is the first of the three parts of the small intestine that receives partially digested food from the stomach and begins with the absorption of nutrients. It is directly attached to the pylorus of the stomach. It has a C-shape, it is closely related to the head of the pancreas and consists of four sections: superior, descending, horizontal, and ascending .

https://www.ncbi.nlm.nih.gov/books/NBK549857

https://www.ncbi.nlm.nih.gov/books/NBK549857
Anatomy, Abdomen and Pelvis, Retroperitoneum – StatPearls – NCBI Bookshelf
24 juil. 2023Structures considered to be secondarily retroperitoneal were initially suspended in the mesentery, and then later migrated behind the peritoneum during development. These structures include the duodenum (except for the first segment), ascending and descending portions of the colon, and the pancreas (except for the tail).

https://www.kenhub.com/en/library/anatomy/the-small-intestine

https://www.kenhub.com/en/library/anatomy/the-small-intestine
Small intestine: Anatomy, location and function | Kenhub
3 nov. 2023The duodenum has both intraperitoneal and retroperitoneal parts, while the jejunum and ileum are entirely intraperitoneal organs. As the small intestine is the main site for the final stages of food digestion and its absorption, its gross and microanatomy are adjusted to that function.

https://www.elsevier.com/resources/anatomy/digestive-system/digestive-canal/duodenum/22178

https://www.elsevier.com/resources/anatomy/digestive-system/digestive-canal/duodenum/22178
Duodenum | Complete Anatomy – Elsevier
The initial part, called the duodenal cap, is intraperitoneal and covered by a mesentery. Shortly thereafter, the superior duodenum dives posteriorly to become retroperitoneal. The superior duodenum is anterior to the bile duct and neck of the pancreas, and posterior to the gallbladder and quadrate lobe of the liver.

https://www.ncbi.nlm.nih.gov/books/NBK482390

https://www.ncbi.nlm.nih.gov/books/NBK482390
Anatomy, Abdomen and Pelvis: Duodenum – StatPearls – NCBI Bookshelf
17 juil. 2023The duodenum is the initial C-shaped segment of the small intestine and is a continuation of the pylorus. Distally, it is in continuation with the jejunum and ileum, with the proximal segment being the shortest and widest. Positioned inferiorly to the stomach, the duodenum is approximately 25 to 30 cm long. Interestingly enough, this portion of the small intestine got its name due to its …

https://pubs.rsna.org/doi/full/10.1148/rg.2020200045

https://pubs.rsna.org/doi/full/10.1148/rg.2020200045
Imaging Spectrum of Duodenal Emergencies | RadioGraphics
The duodenum is mostly retroperitoneal in location, except for the first 2.5 cm, which are intraperitoneal. The duodenum is divided into four segments and has two flexures, the superior and inferior duodenal flexures . The first segment or duodenal bulb passes slightly upward from the pylorus to the level of the gallbladder neck.

https://www.sciencedirect.com/science/article/pii/B9780323402323000686

https://www.sciencedirect.com/science/article/pii/B9780323402323000686
Anatomy and Physiology of the Duodenum – ScienceDirect
Although spanning only 20 to 30 cm, from the pylorus to the ligament of Treitz, the duodenum is the gate that controls the passage of food from the stomach to the jejunum. 1 The name is derived from the Latin phrase intestinum duodenum digitorum, or intestine of twelve digits.This Latin phrase may have derived from the writings of the Greek physician Herophilus (334-280 bc).

https://link.springer.com/referenceworkentry/10.1007/978-3-642-13327-5_17

https://link.springer.com/referenceworkentry/10.1007/978-3-642-13327-5_17
Stomach Duodenum Normal Anatomy, Function and Congenital … – Springer
The duodenum is a secondary retroperitoneal organ, and only the cranial aspect of the first part is intraperitoneal and coated by serosa. Extending from the pylorus to the superior duodenal flexure, the first part of the duodenum is approximately 5 cm long.
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