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The stomach is a muscular organ of the digestive tract. It is located between the esophagus and the small intestine. The stomach is hollow and sac-shaped.

noun: Anatomy, Zoology . a. a saclike enlargement of the alimentary canal, as in humans and certain ... verb (used with object): a saclike enlargement of the alimentary ...

(Click to enlarge) stomach cutaway of an adult human stomach (Carlyn Iverson)

What is the stomach? The stomach is an organ of digestion. It has a saclike shape and is located between the esophagus and the intestines.

Gastric cancer can develop in any part of the stomach and may spread throughout the stomach and to other organs; particularly the esophagus, lungs, lymph nodes, and the liver.