Stomach cancer remains one of the commoner causes of cancer death worldwide, though its incidence has fallen substantially over several decades.

Gastric neuroendocrine tumours arise from hormone-producing cells in the stomach lining.

Gastrointestinal stromal tumour is the commonest mesenchymal tumour of the digestive tract, and the stomach is its commonest site.

Gastric polyps are growths projecting from the stomach lining.

Gastric outlet obstruction is blockage of the passage from the stomach into the duodenum. The stomach fills and cannot empty.

Perforation and bleeding are the two emergency complications of peptic ulcer disease.

A peptic ulcer is a break in the lining of the stomach or duodenum that extends through the muscularis mucosae.