What is appendix cancer?

What is appendix cancer?

Appendix cancer — also called appendiceal cancer — is a rare disease. It occurs when the cells in your appendix mutate (change) and grow out of control.

Your appendix is part of your digestive system. It’s a small tube-like pouch located on the lower right side of your abdomen, near the junction of your large intestine and small intestine. The function of your appendix is unknown. Some experts believe it has something to do with immune function. Others consider it a vestigial organ (one that is no longer useful from an evolutionary standpoint).