Q40: Other congenital malformations of upper alimentary tract
Q40.2: Other specified congenital malformations of stomach
The stomach is located in the upper abdomen. The stomach has a curved shape, and is connected to the gullet (oesophagus) at its upper end and with the first part of the small intestine at its lower end. Between the stomach and the small intestine there is a circular sphincter, the pylorus. The inside of the stomach is lined with mucous membrane. While developing in the womb, many different types of tissue develop in the body. The organs and body parts develop out of the various types of tissue. While developing in the womb, the tissue can change its form and its position in the body. Some tissues merge into one another. Other tissues also degenerate to some degree during development. If the tissue is disturbed while developing, defects may result.
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