Overview
Whenever we hear “appendix”, one thinks of appendicitis, not appendix cancer. No one thinks of cancer when suffering from any problem, but it should not be overlooked.
What is the Appendix?
The appendix is a small, tube-shaped sac that connects to the colon at the start of the large intestine. Although its function is not fully understood, some researchers believe it may play a role in the body’s immune system.
Recent research suggests that the appendix serves as a sanctuary for beneficial bacteria. After severe diarrhoea or infection, it helps repopulate the gut with good bacteria, preventing harmful bacteria from taking over.
What is Appendix Cancer?
Appendix cancer, or appendiceal cancer, occurs when the cells in the appendix grow uncontrollably, forming a tumour. Tumours can be benign (non-cancerous) or malignant (cancerous).
A benign tumour can grow but does not spread, while a cancerous tumour can invade other parts of the body.
Types of Appendix Cancer
1. Carcinoid Tumours (Neuroendocrine Tumours)
These are rare, slow-growing cancerous growths, accounting for about half of all appendix cancers. They often go undetected for many years before diagnosis.
2. Mucinous Neoplasms
These include benign conditions such as appendix mucoceles and precancerous forms like low-grade mucinous neoplasms (LAMN) of the appendix.
3. Appendix Adenocarcinoma
These originate from the cells lining the inner appendix. A rare and aggressive form, known as signet ring cell adenocarcinoma, can also occur.
Symptoms of Appendix Cancer
Symptoms vary based on the type and stage of cancer, but common ones include:
- Abdominal pain (usually lower right side)
- Changes in bowel habits (constipation or diarrhoea)
- Unexplained weight loss
- Loss of appetite or feeling full quickly
- Abdominal swelling or bloating
- Nausea and vomiting
- Fatigue and weakness
- Palpable lump in the abdomen
Risk Factors for Appendix Cancer
The exact cause is unknown, and appendix cancer is considered rare. However, certain factors may slightly increase the risk:
- Age: Most cases occur between 30–60 years.
- Gender: Slightly more common in females.
- Genetic conditions: May be linked to Lynch syndrome or hereditary nonpolyposis colorectal cancer (HNPCC).
- Family history: Family history of gastrointestinal cancers.
- Inflammatory conditions: Conditions like Crohn’s disease or ulcerative colitis.
Having these factors doesn’t mean someone will develop appendix cancer — many people diagnosed have no known risk factors.
Takeaway
Though appendix cancer is rare, awareness and timely diagnosis are crucial for effective treatment and recovery.
By understanding its symptoms, risk factors, and treatment approaches, individuals can take proactive steps toward better health outcomes and improved quality of life.