what are the symptoms of stomach cancer?
['Poor appetite.', 'Weight loss (without trying)', 'Abdominal (belly) pain.', 'Vague discomfort in the abdomen, usually above the navel.', 'A sense of fullness in the upper abdomen after eating a small meal.', 'Heartburn or indigestion.', 'Nausea.', 'Vomiting, with or without blood.']