Stomach Cancer, which is also called Gastric Cancer , is the term used for cancer that originates in the lining of the stomach . The stomach is the J-shaped organ in the upper abdomen, and is part of the digestive system.
Food travels down the esophagus and into the stomach .
There it is mixed with digestive juices from the lining of the stomach and broken down. Stomach Cancer usually begins in the lining of the stomach. The stomach has four layers of lining. The innermost lining, the mucosa , contains the glands that produce the digestive juices. Ninety to ninety-five percent of Stomach Cancers begin in the mucosa layer.