What are the types of appendix cancer?
There are two main types of appendiceal cancer. Carcinoid tumors are the most common cancers to affect the appendix and are usually found at the tip of the appendix. Carcinoid tumors usually have no symptoms, so they are often found after doctors remove the organ.
Carcinoid tumors are a type of gastrointestinal neuroendocrine tumor
The other type of appendix cancer is a carcinoma. Carcinomas in the appendix include:
- Mucinous adenocarcinoma – These are the second-most common form of appendiceal cancer. They are usually found after they have spread outside the appendix.
- Goblet cell carcinoids – These are similar to mucinous adenocarcinomas.
- Intestinal-type adenocarcinoma – These tumors often cause symptoms similar to colorectal cancer. They are usually found near the bottom of the appendix.
- Signet-ring adenocarcinoma – This is a rare and aggressive form of appendiceal cancer that often causes appendicitis.