Duodenal bulb

Changed by Daniel J Bell, 1 Apr 2023

Disclosures - updated 19 Aug 2022: Nothing to disclose

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The duodenal bulb refers to athe proximal~~-most~~ most portion of the duodenum closest to the stomach and ~~for~~includes most of the D1 segment of the duodenum. It usually has a length of about 5 cm. It commences at the gastric pylorus and ends at the neck of the gallbladder. It is located posterior to the liver and the gallbladder and superior to the pancreatic head.

Related pathology

~~it is a~~
common site for ~~the occurrence of~~ duodenal ulcers (see peptic ulcer disease).

-<p>The <strong>duodenal bulb</strong> refers to a proximal-most portion of the <a href="/articles/duodenum">duodenum</a> closest to the <a title="Stomach" href="/articles/stomach">stomach</a> and for most of the D1 segment of the duodenum. It usually has a length of about 5 cm. It commences at the gastric pylorus and ends at the neck of the <a title="gallbladder" href="/articles/gallbladder">gallbladder</a>. It is located posterior to the <a title="Liver" href="/articles/liver">liver</a> and the gallbladder and superior to the pancreatic head.</p><h4>Related pathology</h4><ul><li>it is a common site for the occurrence of <a href="/articles/duodenal-ulcers">duodenal ulcers</a> (see <a href="/articles/peptic-ulcer-disease">peptic ulcer disease</a>).</li></ul>
+<p>The <strong>duodenal bulb</strong> refers to the proximal most portion of the <a href="/articles/duodenum">duodenum</a> closest to the <a href="/articles/stomach" title="Stomach">stomach</a> and includes most of the D1 segment of the duodenum. It usually has a length of about 5 cm. It commences at the gastric pylorus and ends at the neck of the <a href="/articles/gallbladder" title="gallbladder">gallbladder</a>. It is located posterior to the <a href="/articles/liver" title="Liver">liver</a> and the gallbladder and superior to the pancreatic head.</p><h4>Related pathology</h4><ul><li><p>common site for <a href="/articles/duodenal-ulcers">duodenal ulcers</a> (see <a href="/articles/peptic-ulcer-disease">peptic ulcer disease</a>)</p></li></ul>

References changed:

1. Meyer R. Air-Contrast Study of the Duodenal Bulb; Its Importance in the Diagnosis of Duodenal Ulcer. Radiology. 1952;58(3):393-400. <a href="https://doi.org/10.1148/58.3.393">doi:10.1148/58.3.393</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/14900421">Pubmed</a>
2. Jayaraman M, Mayo-Smith W, Movson J, Dupuy D, Wallach M. CT of the Duodenum: An Overlooked Segment Gets Its Due. Radiographics. 2001;21 Spec No(suppl_1):S147-60. <a href="https://doi.org/10.1148/radiographics.21.suppl_1.g01oc01s147">doi:10.1148/radiographics.21.suppl_1.g01oc01s147</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/11598254">Pubmed</a>
1. Meyer et.al Air-Contrast Study of the Duodenal Bulb1. (1952) Radiology. 58 (3): 393-400. <a href="https://doi.org/10.1148/58.3.393">doi:10.1148/58.3.393</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/14900421">Pubmed</a> <span class="ref_v4"></span>
2. Mahesh V. Jayaraman, William W. Mayo-Smith, Jonathan S. Movson, Damian E. Dupuy, Michael T. Wallach. CT of the Duodenum: An Overlooked Segment Gets Its Due1. (2001) RadioGraphics. 21 Spec No: S147-60. <a href="https://doi.org/10.1148/radiographics.21.suppl_1.g01oc01s147">doi:10.1148/radiographics.21.suppl_1.g01oc01s147</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/11598254">Pubmed</a> <span class="ref_v4"></span>

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Duodenum bulbs

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