Appendix Cancer: Statistics

Approved by the Cancer.Net Editorial Board, 01/2020

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. This is uncommon, accounting for about 0.5% of all tumors that start in the GI tract.

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 section), and size.

For grade 1 or grade 2 GI neuroendocrine tumors overall, a category that includes neuroendocrine tumor of the appendix, the 5-year survival is between 67% to 97%, depending 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 data based on the number of people with this cancer in the United States. Also, experts measure the survival statistics every 5 years. So the estimate may not show the results of better diagnosis or treatment available for less than 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, National Cancer Institute, and UpToDate (all accessed January 2020).

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