The first symptoms of stomach cancer are similar to those of some common stomach diseases. These include:

• Heartburn or indigestion that does not go away
• Lack of appetite
• Feeling full after eating only small amounts
• Pain in the upper abdomen
• Weight loss
• Vomiting
• Difficulty swallowing
• Blood in stool or black-colored stool
• Tiredness or breathlessness (due to anemia)

These symptoms can be caused by other conditions, but it important to have them looked at.