Merck Manual

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Quick Facts

Stomach Cancer

By

The Manual's Editorial Staff

Last full review/revision Mar 2021| Content last modified Mar 2021
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What is stomach cancer?

Cancer Overview of Cancer Cancer is the out-of-control growth of cells in your body. Cells are the tiny building blocks of your body. Cells specialize in what they do. For example, your intestines have muscle cells to... read more is the out-of-control growth of cells in your body. Cells are the tiny building blocks of your body. Cells specialize in what they do. Different organs are made of different kinds of cells. Almost any kind of cell can become cancerous.

  • Symptoms of stomach cancer include discomfort in your belly, weight loss, and weakness

  • Stomach cancer spreads easily to other parts of your body and is often deadly

  • Doctors treat it with surgery

What causes stomach cancer?

What are the symptoms of stomach cancer?

How can doctors tell if I have stomach cancer?

How do doctors treat stomach cancer?

Doctors treat stomach cancer that hasn’t spread with:

  • Surgery

Removing the whole tumor before it spreads is the only chance for a cure. For stomach cancer that has spread, treatment can’t cure the disease or help someone live longer. Doctors may treat symptoms and make the person feel more comfortable with:

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