K31: Other diseases of stomach and duodenum

K31.4: Gastric diverticulum

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.

The wall of your stomach is turned outward, or protruding, in one place. This does not usually cause any symptoms. But you may also have abdominal pain or a feeling of fullness. Sometimes such a protrusion may become inflamed in the wall of the stomach.