What Is Stomach Cancer? Stomach (gastric) cancer is cancer that starts in the cells lining the stomach. The stomach is an organ on the left side of the upper abdomen that digests food. The stomach is part of the digestive tract, a series of hollow, muscular organs joined in a long, twisting tube from the mouth to the anus. The digestive tract processes nutrients in foods that are eaten and helps pass waste material out of the body: -Food moves from the throat to the stomach through a tube called the esophagus. -After food enters the stomach, it is broken down by stomach muscles that mix the food and liquid with digestive juices. -After leaving the stomach, partly digested food passes into the small intestine and then into the large intestine. -The end of the large intestine, called the rectum, stores the waste from the digested food until it is pushed out of the anus during a bowel movement. To Know more about symptoms & Treatment of Stomach Cancer, Book a consultation on 08048037730. Cancer specialist in Andheri | Oncologist in Andheri | Best Oncologist in Andheri | Stomach cancer specialist in Andheri