How is stomach cancer diagnosed?

If you have a symptom that suggests stomach cancer, your doctor must find out whether it is really due to cancer or to some other cause. Your doctor may refer you to a gastroenterologist, a doctor whose specialty is diagnosing and treating digestive problems.

The doctor asks about your personal and family health history. You may have blood or other lab tests. You also may have:

• Physical exam: The doctor checks your abdomen for fluid, swelling, or other changes. The doctor also feels for swollen lymph nodes. Your skin and eyes are checked to see if they seem yellow.
• Upper GI series: The doctor orders x-rays of your esophagus and stomach. The x-rays are taken after you drink a barium solution. The solution makes your stomach show up more clearly on the x-rays.
• Endoscopy: The doctor uses a thin, lighted tube (endoscope) to look into your stomach. The doctor first numbs your throat with an anesthetic spray. You also may receive medicine to help you relax. The tube is passed through your mouth and esophagus to the stomach.
• Biopsy: The doctor uses an endoscope to remove tissue from the stomach. A pathologist checks the tissue under a microscope for cancer cells. A biopsy is the only sure way to know if cancer cells are present.