What is the most common type of stomach cancer?

Nearly all stomach cancers are adenocarcinomas. Adenocarcinoma of the stomach begins in the mucus-producing cells in the innermost lining of the stomach.

Doctors also group adenocarcinoma of the stomach by where it forms. Gastric cardia cancer begins in the top inch of the stomach, just below where it meets the esophagus. Non-cardia gastric cancer begins in all other parts of the stomach.

Other, rarer types of stomach cancer include gastrointestinal neuroendocrine tumors, gastrointestinal stromal tumors (GIST), and primary gastric lymphoma. Your healthcare team can explain more about a specific type of stomach cancer.