Keeping Track: What to Expect from Cancer Monitoring Tests

Receiving a bowel cancer diagnosis is life-altering, but the journey doesn’t end once treatment begins or even concludes. Ongoing monitoring is a vital part of ensuring the best possible outcome. For Australians, particularly those navigating early-onset bowel cancer, understanding what to expect from post-diagnosis cancer monitoring tests is an important step toward empowerment, peace of mind, and proactive health management.

Below, we break down the key types of monitoring tests used in Australia, what each one involves, how often you might need them, and why they matter in your ongoing care.

Why Cancer Monitoring Matters

Monitoring tests help your healthcare team:

• Detect signs of recurrence early
• Track your body’s response to treatment
• Manage side effects or complications
• Adjust treatment plans if needed
• Provide reassurance and peace of mind

Whether you’re still in active treatment or in remission, regular monitoring is a crucial layer of protection. It doesn’t mean something’s wrong, it’s about staying one step ahead.

How Often Are Tests Done?

The frequency of monitoring depends on several factors:

• Your stage at diagnosis
• Type of treatment received (e.g., surgery, chemo, radiation)
• Presence of any remaining cancer markers
• Your general health and age
• Recommendations from your oncologist

In Australia, follow-up schedules often follow this pattern:

• Every 3 to 6 months in the first 2 years post-treatment
• Every 6 to 12 months for the next 3 years
• Annually after 5 years, depending on your individual risk

This schedule may be tailored to you, especially if you were diagnosed under 50 or have a hereditary condition like Lynch syndrome.

For many, life starts to feel like it’s lived in blocks of three months. That’s the gap between scans, between questions being answered (or not), and between making plans. It’s incredibly hard to think long-term when your next PET scan might change everything.

Common Cancer Monitoring Tests for Bowel Cancer

1. Blood Tests (Including CEA Tumour Marker)

What it is:
A simple blood test, often including a check of Carcinoembryonic Antigen (CEA), a protein that can be elevated in some bowel cancer cases.

Purpose:

• Monitor for cancer recurrence
• Identify inflammation or infection
• Track organ function (especially if you had chemotherapy)

What to expect:

• Usually done at regular intervals (e.g., every 3–6 months)
• Not everyone has a rise in CEA, so it’s one tool among many

Important to know:

• CEA isn’t foolproof, other conditions like smoking or inflammation can also cause it to rise
• A jump in CEA doesn’t confirm recurrence, it usually means more scans

2. Colonoscopy

What it is:
A camera-based procedure where a thin tube is inserted into the rectum to examine the colon and rectum.

Purpose:

• Detect new polyps or cancer
• Check for signs of recurrence
• Monitor post-surgical areas for regrowth

What to expect:

• Usually done 6–12 months after surgery, then every 3–5 years
• You’ll need to follow a prep routine (laxatives, fasting) to empty the bowel
• Sedation is usually offered for comfort

Important to know:

• If polyps are found, they may be removed during the procedure
• It’s a powerful preventative tool, not just diagnostic

3. CT Scans (Computed Tomography)

What it is:
A detailed imaging scan that shows cross-sectional views of the body, usually the chest, abdomen, and pelvis.

Purpose:

• Detect recurrence in lungs, liver, or lymph nodes
• Identify secondary cancers or complications

What to expect:

• Non-invasive and typically takes 10–30 minutes
• You may be given contrast dye by injection or drink
• Often scheduled during the first 3 years post-treatment

Important to know:

• Involves a small amount of radiation
• Tell your doctor if you’re pregnant or have kidney problems

4. MRI Scans (Magnetic Resonance Imaging)

What it is:
An imaging test using magnetic fields and radio waves to create detailed images, especially of soft tissue.

Purpose:

• Used if CT results are inconclusive or more detail is needed
• Common for rectal cancer follow-up

What to expect:

• Non-invasive, takes 30–60 minutes
• No radiation, but the machine can be loud or claustrophobic
• You might receive contrast dye

Important to know:

• Not suitable for people with certain implants or pacemakers
• Let the team know if you get anxious or have mobility challenges

5. PET Scans (Positron Emission Tomography)

What it is:
An advanced scan that shows how tissues and organs are functioning, often paired with CT.

Purpose:

• Detect cancer activity not visible on other scans
• Assess unexplained symptoms or raised tumour markers

What to expect:

• Involves a small injection of radioactive glucose
• You’ll rest quietly while it circulates, then have the scan (about 30 minutes)

Important to know:

• Usually only used when recurrence is suspected
• May involve out-of-pocket costs if not fully covered by Medicare

6. Physical Exams and Symptom Checks

What it is:
Routine appointments where your doctor checks your health and asks how you’re feeling.

Purpose:

• Track side effects
• Identify signs of recurrence
• Provide emotional support and practical help

What to expect:

• Usually brief, but valuable
• You’ll likely be asked about weight, bowel habits, fatigue, pain, and appetite

Important to know:

• Speak up about anything unusual, nothing is too small

7. Genetic Testing and Ongoing Risk Management

What it is:
Testing for inherited cancer risk, especially important in younger diagnoses.

Purpose:

• Identify conditions like Lynch syndrome or FAP
• Guide your own monitoring and family members’ risk assessments

What to expect:

• A saliva or blood test, typically done through a genetics clinic
• Counselling is usually offered before and after

Important to know:

• If positive, you may need more frequent screenings
• Close family members may also be encouraged to test

Tips for Staying on Top of Monitoring Appointments

• Keep a health diary or app to track symptoms, tests, and results
• Use calendar reminders for upcoming appointments
• Ask for a printed monitoring plan from your oncologist
• Check My Health Record to view test results online
• Keep your GP looped in, they’re key in coordinating care

Navigating Scanxiety: The Emotional Side of Monitoring

The lead-up to tests can be brutal. So can the wait for results. For many of us, scanxiety is real and it doesn’t ease just because you’ve done it before.

Some strategies that can help:

• Try grounding exercises or mindfulness to stay calm
• Talk to a psychologist, support group, or someone you trust
• Keep yourself distracted and busy before results are due
• Ask your team exactly when you’ll get your results to avoid sitting in limbo

If the emotional toll gets too high, speak up. Mental health support is part of your care too.

Medicare and Test Coverage in Australia

Most monitoring tests are covered by Medicare, especially through public hospital teams. But there can be:

• Out-of-pocket costs for private tests or non-standard scans like PET
• Wait times in the public system

Always ask about potential costs and whether a referral is needed. If you have private health insurance, check your policy for coverage.

Final Thoughts

Staying on top of your monitoring tests may feel exhausting at times, but it’s one of the most proactive things you can do for your future health. Whether you’re in remission or still in active treatment, these check-ins offer a vital safety net and a clearer path forward.

For many of us, this journey isn’t measured in years, it’s measured in scans. Three months at a time. Test by test. Result by result. And that’s okay. Because each test is a step forward in your care, your understanding, and your life.

Knowledge is power. Preparation is peace of mind.