The esophagus is the hollow, muscular tube that moves food and liquid from the throat to the stomach. The wall of the esophagus is made up of several layers of tissue, including mucous membrane, muscle, and connective tissue. Esophageal cancer starts on the inside lining of the esophagus and spreads outward through the other layers as it grows.

Source: NCI (NIH)1

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Esophagus. The muscular tube that connects the back of the mouth to the top of the stomach that carries food from the mouth to the stomach. The upper third of the esophagus is usually referred to as the proximal esophagus, or cervical esophagus. The middle third of the esophagus may be referred to as the thoracic esophagus. The lower third of the esophagus is usually referenced as the distal esophagus.


Introduction: Esophagus

The esophagus is the tube that carries food, liquids and saliva from your mouth to the stomach. You may not be aware of your esophagus until you swallow something too large, too hot or too cold. You may also become aware of it when something is wrong.

Source: MedLinePlus (NIH)3

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Esophagus: The muscular membranous segment between the Pharynx and the Stomach in the Upper Gastrointestinal Tract.4

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Esophagus adverse event: A digestive system adverse event that occurs at esophagus5

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  1. Source: NCI (NIH): types/ esophageal/ patient/ esophageal-treatment-pdq
  2. Source: RDCRN (NCATS/NIH): cms/ cegir/ Learn-More/ Glossary
  3. Source: MedLinePlus (NIH): esophagusdisorders.html
  4. Source: MeSH (U.S. National Library of Medicine)
  5. Source: OAE Ontology

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Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.