Adenocarcinoma of the stomach is divided into two main classes, depending on where it forms in the stomach: >Gastric cardia cancer begins in the top inch of the stomach, just below where it meets the esophagus. 
Adenocarcinoma of the stomach is divided into two main classes, depending on where it forms in the stomach: >Gastric cardia cancer begins in the top inch of the stomach, just below where it meets the esophagus. 