What causes colorectal cancer in children
Understand the rare causes, risk factors, and genetic influences behind childhood colorectal cancer.
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Colorectal cancer is extremely rare in children, but it can still occur. Understanding what causes colorectal cancer in children helps parents and caregivers act promptly if symptoms arise and supports early detection, which is critical for better outcomes. Most cases in young patients are linked to inherited genetic conditions or family history, though awareness and regular medical evaluation are essential whenever symptoms are observed. Learning about the causes and risk factors allows families to seek timely medical advice and take proactive steps for their child’s health.
What is colorectal cancer in children?
- A rare condition – Childhood colorectal cancer accounts for a very small percentage of paediatric cancers. It is significantly less common than adult colorectal cancer but requires careful monitoring and specialist care when identified.
- Origin in the colon or rectum – The disease develops when abnormal cells grow uncontrollably in the colon or rectum. These cells can form tumours and disrupt the normal function of the digestive system. Early detection can help control abnormal growth.
- Often linked to genetic factors – Many cases in children are associated with inherited genetic syndromes. Identifying these links early can help families understand their child’s risk and plan screening or interventions. Being aware early helps guide care.
- Can present differently than in adults – Symptoms in children may differ from those seen in adults, sometimes making detection more challenging. Persistent abdominal discomfort or changes in bowel habits should always be investigated by a medical professional.
What are the genetic causes of colorectal cancer in children?
- Familial Adenomatous Polyposis (FAP) – FAP is a hereditary condition that causes numerous polyps in the colon. Without treatment, these polyps can become cancerous, making early diagnosis and monitoring crucial.
- Lynch syndrome (hereditary non-polyposis colorectal cancer) – This condition increases the risk of colorectal and other cancers at a young age due to mutations in DNA repair genes. Children with Lynch syndrome require close surveillance.
- Juvenile polyposis syndrome – This syndrome leads to the growth of benign polyps in the digestive tract, some of which may develop into cancer over time if left untreated. Regular monitoring is important.
- Peutz-Jeghers syndrome – This inherited condition causes polyp formation and distinctive dark spots on the skin and mucous membranes. Regular monitoring is essential to reduce cancer risk in children.
What are the genetic causes of colorectal cancer in children?
- Familial Adenomatous Polyposis (FAP) – FAP is a hereditary condition that causes numerous polyps in the colon. Without treatment, these polyps can become cancerous, making early diagnosis and monitoring crucial.
- Lynch syndrome (hereditary non-polyposis colorectal cancer) – This condition increases the risk of colorectal and other cancers at a young age due to mutations in DNA repair genes. Children with Lynch syndrome require close surveillance.
- Juvenile polyposis syndrome – This syndrome leads to the growth of benign polyps in the digestive tract, some of which may develop into cancer over time if left untreated. Regular monitoring is important.
- Peutz-Jeghers syndrome – This inherited condition causes polyp formation and distinctive dark spots on the skin and mucous membranes. Regular monitoring is essential to reduce cancer risk in children.
What are the other contributing factors?
- Family history of cancer – Children with parents or siblings who have had bowel cancer face a higher risk. Understanding what causes colorectal cancer in children includes recognising these familial patterns.
- Inflammatory Bowel Disease (IBD) – Chronic conditions such as Crohn’s disease or ulcerative colitis can elevate the likelihood of abnormal cell growth in the colon. Managing these conditions helps reduce risk.
- Immune system disorders – A weakened immune system may make children more susceptible to cancerous changes in cells. Maintaining overall health and regular medical care can help support their immune system.
- Environmental and lifestyle influences – Although rare in children, exposure to certain toxins or dietary factors may contribute to risk. A healthy environment and monitoring exposures are important for overall well-being.
What are some early symptoms to watch for?
- Blood in the stool – Bright red or dark blood may indicate bleeding in the colon, which requires immediate medical attention.
- Persistent abdominal pain – Ongoing stomach pain or cramping that does not resolve is a potential warning sign of colorectal cancer.
- Changes in bowel habits – Persistent diarrhoea or alternating patterns should be investigated promptly by a healthcare provider.
- Unexplained weight loss and fatigue – Unexpected weight loss and tiredness without a clear cause may signal a serious underlying problem.
What are some early symptoms to watch for?
- Blood in the stool – Bright red or dark blood may indicate bleeding in the colon, which requires immediate medical attention.
- Persistent abdominal pain – Ongoing stomach pain or cramping that does not resolve is a potential warning sign of colorectal cancer.
- Changes in bowel habits – Persistent diarrhoea or alternating patterns should be investigated promptly by a healthcare provider.
- Unexplained weight loss and fatigue – Unexpected weight loss and tiredness without a clear cause may signal a serious underlying problem.
How is colorectal cancer diagnosed in children?
- Medical history and family review – Doctors review family history to identify inherited conditions that could increase risk. This review helps guide genetic testing and early screening decisions.
- Physical examination – A thorough abdominal examination and general health assessment help detect any abnormalities. Early detection through these assessments can improve treatment outcomes.
- Diagnostic tests – Procedures such as colonoscopy, imaging scans, and biopsy are used to confirm the presence of cancer cells. These tests guide diagnosis and effective treatment planning.
- Genetic testing – Testing for inherited mutations helps determine what causes colorectal cancer in children and guides monitoring and management for both the child and family members.
Take charge of your child’s health
While colorectal cancer in children is rare, being aware of its causes, symptoms, and risk factors is essential. Knowledge empowers families to act quickly, seek medical advice, and participate in regular monitoring if necessary. If you notice persistent symptoms, have a family history of bowel cancer, or suspect a genetic condition, consult a healthcare professional to discuss bowel cancer screening and potential preventive measures.
FAQs
Can children with colorectal cancer be cured?
Treatment outcomes vary depending on early detection and cancer stage. Many children respond well to surgery, chemotherapy, and targeted therapies.
At what age should genetic screening be considered?
Screening may be recommended in childhood or adolescence for families with a known history of genetic syndromes associated with colorectal cancer.
Are symptoms in children always obvious?
Not always. Some children may have subtle or intermittent symptoms, making awareness of risk factors and family history especially important.
What role does diet play in childhood colorectal cancer?
Dietary factors are less significant than genetic or inherited conditions, but a healthy diet supports overall digestive health.