How can my doctor tell if I have stomach cancer?
If your doctor suspects that you might have stomach cancer, he or she will look at your medical history and do a complete physical exam. Your doctor might use endoscopy (say: en-doh-ska-pee) to try to see the tumor. For this exam, a thin, lighted tube is put into your mouth and passed down to your stomach. Your doctor may give you medicine before the test to make you more comfortable.
During endoscopy, your doctor might remove a small piece of your stomach to check it for cancer cells. This is called a biopsy sample. The sample is then sent to a lab where it is looked at under a microscope to determine if it is cancerous.
Written by familydoctor.org editorial staff