Stephen J. Schueler, M.D.

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Pyloric Obstruction Anatomy

To better understand pyloric stenosis, it helps to understand the anatomy of the stomach.

The esophagus is a muscular tube that propels food from the mouth, to the stomach. It begins in the pharynx, just below the base of the tongue, and passes through the chest, next to the spine. It then passes through the diaphragm before emptying into the stomach.

The stomach is a pouch that produces acid, which helps to digest the food. The pylorus is a short, muscular tube that opens to allow food to pass from the stomach and into the intestine.

Gastrointestinal anatomy:

  • Esophagus and stomach
  • Intestines
  • Blood vessels of the intestines
  • Entire gastrointestinal tract

Last Updated: Jul 8, 2009 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Pyloric Obstruction References
  1. Hernanz-Schulman M. Infantile hypertrophic pyloric stenosis. Radiology. 2003 May;227(2):319-31. [12637675]
  2. Ibarguen-Secchia E. Endoscopic pyloromyotomy for congenital pyloric stenosis. Gastrointest Endosc. 2005 Apr;61(4):598-600. [15812419]
  3. White JS, Clements WD, Heggarty P, Sidhu S, Mackle E, Stirling I. Treatment of infantile hypertrophic pyloric stenosis in a district general hospital: a review of 160 cases. J Pediatr Surg. 2003 Sep;38(9):1333-6. [14523815]
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