Appendix Cancer: Statistics

Approved by the Cancer.Net Editorial Board, 02/2022

ON THIS PAGE: You will find information about the number of people who are diagnosed with appendix cancer each year. You will also read general information on surviving the disease. Remember, survival rates depend on several factors. Use the menu to see other pages.

Primary appendix cancer is cancer that starts in the appendix. Primary appendix cancer is very uncommon, affecting about 1 to 2 people out of every 1 million people. It is more common among people between 50 and 55 years of age.

The 5-year survival rate tells you what percent of people live at least 5 years after the cancer is found. Percent means how many out of 100. The 5-year survival rate for people with appendix cancer depends on many factors, including the stage and grade of disease at time of diagnosis, type of appendiceal tumor (see “Types of appendix tumors” in the Introduction), and size of the tumor.

For grade 1 or grade 2 gastrointestinal (GI) neuroendocrine tumors overall, a category that includes neuroendocrine tumor of the appendix, the 5-year survival is between 67% and 97%. The survival rate depends on the size of the tumor and where it has grown or spread.

Due to the rare nature of other types of appendix cancer, specific statistics are not available. Talk with your doctor about the factors related to your specific diagnosis.

It is important to remember that statistics on the survival rates for people with appendix cancer are an estimate. The estimate comes from annual data based on the number of people with this cancer in the United States. Also, experts measure the survival statistics every 5 years. This means the estimate may not reflect the results of advancements in how appendix cancer is diagnosed or treated from the last 5 years. Talk with your doctor if you have any questions about this information. Learn more about understanding statistics.

Statistics adapted from the websites of the American Cancer Society and the National Organization for Rare Disorders. (All sources accessed January 2022.)

The next section in this guide is Risk Factors. It describes the factors that may increase the chance of developing appendix cancer. Use the menu to choose a different section to read in this guide.