Stage 0 means that there are severely abnormal cells in the inner lining of the stomach. Doctors sometimes call this high grade dysplasia (HGD). There’s very little risk of any having spread.
It's not usual for stomach cancer to be diagnosed this early.
The stage of your cancer helps your doctor to decide what treatment you need. Treatment also depends on:
- your type of cancer (the type of cells the cancer started in)
- where the cancer is in your stomach
- other health conditions
For stage 0 cancer your surgeon may be able to remove the cancer from the lining of the stomach.
You have this surgery through a flexible tube called an endoscope. You’re asleep when you have it.
The doctor puts the tube down your throat. They can then put a thin wire (snare) through the tube to remove the cancer cells. This surgery is called endoscopic mucosal resection or EMR.
You may need surgery to remove part or all of your stomach if it’s not possible to remove your cancer with an endoscopic mucosal resection.