Stomach cancer is cancer that starts in the stomach.
Cancer - stomach; Gastric cancer; Gastric carcinoma; Adenocarcinoma of the stomach
Several types of cancer can occur in the stomach. The most common type is called adenocarcinoma. It starts from one of the cell types found in the lining of the stomach.
Adenocarcinoma is a common cancer of the digestive tract. It is not very common in the United States. It is diagnosed much more often in people in eastern Asia, parts of South America, and eastern and central Europe. It occurs most often in men over age 40.
The number of people in the United States who develop this cancer has decreased over the years. Experts think this decrease may be in part because people are eating less salted, cured, and smoked foods.
You are more likely to be diagnosed with gastric cancer if you:
- Have a diet low in fruits and vegetables
- Have a family history of gastric cancer
- Have an infection of the stomach by a bacteria called Helicobacter pylori
- Had a polyp (abnormal growth) larger than 2 centimeters in your stomach
- Have inflammation and swelling of the stomach for a long time (chronic atrophic gastritis)
- Have pernicious anemia (low number of red blood cells from intestines not properly absorbing vitamin B12)