<unk>  is a common digestive tract cancer in some Asian areas such as Japan and China, but in the United States, the number of people diagnosed with the disease is declining in recent years.<unk>  is cancer that occurs in the<unk>  which is responsible for receiving and holding the food you eat and then helping to break down and digest it. Gastric cancer is another term for this disease. Adenocarcinoma is the most common type of<unk> . The disease begins on the surface of the gastric mucosa. Usual symptoms include upper abdominal pain, loss of appetite, weight loss, nausea, vomiting, etc. If not treated, the cancer invades more deeply into the muscular layer and nearby tissues. The cancer cells can spread by breaking away from the original tumor. They enter blood vessels or lymph vessels, which branch into all the tissues of the body. The cancer cells may attach to other tissues and grow to form new tumors that may damage those tissues.
Stomach cancer
Small intestine cancer
Oral ulcer
Oral cancer
Gastrointestinal varices
Head and neck cancer
Laryngeal cancer
Appendix cancer