Risk factors for gastric cancer in Kolkata include male sexuality (incidence doubled), Helicobacter pylori infection, tobacco use, atrophic gastritis, incomplete gastrectomy and Ménétrier’s disease.
Gastral distal or antral cancer associated with H infection. pylori, alcohol consumption, salty foods, processed meats and low-fat fruits and vegetables are very common in East Asia.
Tumours of the proximal stomach (cardia) are associated with obesity, and tumours of the gastroesophageal junction are associated with reflux and Barrett’s oesophagus and are more common in non Asian countries.
Ninety per cent(90%) of gastric cancers are adenocarcinomas. The other types of gastric malignancies such as gastrointestinal stromal tumours (GISTs), lymphomas and neuroendocrine tumours are rarer.