5 Common Myths About Appendix Cancer

Appendix cancer may resemble appendicitis or another digestive condition, and some cases are discovered only after the appendix is removed and examined by a pathologist.  

Because many patients have never heard of the disease before diagnosis, misconceptions can add confusion when clear information matters most. 

Michael Wach, MD, a gastrointestinal surgical oncologist at Moffitt Cancer Center, debunks five myths about the disease.   

Myth 1: Removing the Appendix Always Cures the Cancer 

For some small tumors confined to the appendix, an appendectomy may be the only treatment needed. Other patients may require additional surgery, chemotherapy or both. 

Michael Wach, MD

"Removing the appendix may be enough for some early-stage tumors, but other patients need additional treatment based on the type of cancer and how far it has spread," Wach said. 

Patients whose cancer has spread within the abdominal cavity may be evaluated for cytoreductive surgery, which removes visible tumors, and heated intraperitoneal chemotherapy, or HIPEC, which circulates heated chemotherapy throughout the abdomen during surgery. 

Myth 2: Appendix Cancer Is Always Found Early 

Appendix cancer is often discovered by chance during surgery for suspected appendicitis or during imaging for another condition. Some patients have no noticeable symptoms until the disease has spread. 

Possible symptoms include persistent abdominal pain, bloating, pelvic fullness, changes in bowel habits and unexplained weight gain or weight loss. These symptoms can have many causes, but those that persist or worsen should be discussed with a health care provider. 

Patients who have their appendix removed also may want to ask whether the tissue received a complete pathology review. 

Myth 3: Appendix Cancer Is the Same as Colon Cancer 

Appendix cancer and colon cancer share some characteristics, but they do not always behave the same way. Some appendix tumors produce mucus that can spread throughout the abdominal cavity, sometimes causing pseudomyxoma peritonei, a condition also known as “jelly belly” that is characterized by the accumulation of gelatinous tumor cells in the abdomen.  

"Appendix cancer can spread and behave differently than colon cancer, so treatment should be based on the specific tumor rather than a one-size-fits-all approach," Wach said. 

Myth 4: Only Older Adults Get Appendix Cancer 

Appendix cancer can occur at nearly any age. Although the median age at diagnosis is in the mid-50s, younger adults and adolescents also can be diagnosed. 

"Younger patients may not be considered at risk at first, but age and a healthy lifestyle do not rule out appendix cancer," Wach said. 

Symptoms in younger patients may be attributed to more common conditions, so persistent or worsening symptoms should be evaluated regardless of age. 

Myth 5: Once Appendix Cancer Has Spread to the Abdomen, Nothing Can Be Done 

Cancer that has spread within the abdomen is serious, but it does not always mean treatment options have been exhausted. 

For carefully selected patients, cytoreductive surgery combined with HIPEC may help control the disease and extend survival. A specialist can review the pathology, imaging and pattern of disease to determine whether this approach may be appropriate. 

"Appendix cancer is a one-in-half-a-million diagnosis," Wach said. "Patients need someone who understands the nuances of managing each individual case and knows when cytoreductive surgery and HIPEC may be right for them." 

Not every patient is a candidate, but an evaluation by a team experienced in treating appendix cancer can help clarify the available options.