Types of Stomach Cancer
The majority of gastric cancers, (>90%) are adenocarcinomas, an abnormal growth of the inner lining of the stomach wall.
- Proximal (Cardia) stomach cancer — Affects the first part of the stomach and may extend into the gastroesophageal junction. Risk factors for this type of cancer include obesity and gastroesophageal reflux disease.
- Non-cardia stomach cancer — Affects any other parts of the stomach. May develop from prolonged periods of inflammation and irritation. Commonly associated with chronic infection with Helicobacter pylori bacteria.
- Diffuse stomach cancer — Grows within the stomach wall as scattered cells without forming a distinct tumor. May have a genetic cause.
Other Cancers of the Stomach
- Gastrointestinal stomal tumors (GISTS) — abnormal growth of the connective tissues of the stomach wall.
- Lymphoma — uncontrolled growth of immune cells of the stomach.
- Carcinoid tumors — cancer of the hormone-producing cells of the stomach.