“They Said It Was Haemorrhoids”: When Bowel Cancer Is Diagnosed Late
Summary
Bowel cancer is one of the most common cancers in Australia, and it is very treatable when found early. This guide is for people whose bleeding, changed bowel habits or tiredness were put down to something minor, whose positive screening test wasn’t followed up, or whose colonoscopy was delayed. It explains the warning signs, the timeframes Australian guidelines set, a diagram of the bowel, and when a late diagnosis might point to care that fell short.
Quick answer · updated November 2026
Rectal bleeding, a change in bowel habit, unexplained anaemia, weight loss or abdominal pain should be investigated. Australian guidelines say that when symptoms suggest bowel cancer, referral and colonoscopy should happen within four weeks. A positive screening test should be followed by colonoscopy. If your symptoms or test weren’t acted on, you can ask for your GP and hospital records.
Diagnosing bowel cancer at a glance
- 1Symptoms or a positive testBleeding, bowel changes, anaemia, or a positive screening kit.
- 2Seeing your GPAn examination, blood tests and a decision about referral.
- 3ReferralIf bowel cancer is suspected, colonoscopy within 4 weeks.
- 4ColonoscopyA camera test that can find and sample cancer.
- 5TreatmentA surgeon within 2 weeks of referral once cancer is found.
At any stage: heavy bleeding, severe abdominal pain, vomiting or being unable to pass wind needs emergency care.
I was forty-one when I first saw blood in the toilet. I’d had two kids. I knew about haemorrhoids. But it kept happening, and I felt tired in a way that sleep didn’t fix.
My GP was lovely. She asked a few questions, didn’t examine me, and said it was almost certainly haemorrhoids. She gave me a cream and said to come back if it didn’t settle.
It didn’t settle. Six months later I went back, more tired, with my jeans looser. A different doctor said I was probably run down and checked my iron. It was low. He gave me tablets.
Nobody said the word colonoscopy for another year.
A composite story, drawn from the experiences of many families I have worked with, combined and changed so that no one can be identified. It does not describe any individual client.
If you were diagnosed with bowel cancer after months or years of symptoms being put down to something minor, I want you to know that your questions are reasonable. Bowel cancer is common, and its early signs are well known.
This guide covers the warning signs, screening, the timeframes Australian guidelines set, what your records should show, and how the law looks at a late diagnosis.
Why I can write this
I have been a medical negligence lawyer since 2014 and have worked on many hundreds of claims, including many involving delayed cancer diagnosis. My doctorate looked at patterns of failure in medical negligence. I am not medically qualified. The clinical facts in this article are checked against named sources, listed in the references, and I explain how I work in our editorial standards.
Start with your question
- What are the warning signs of bowel cancer?
- What happens after a positive bowel screening test?
- How quickly should I get a colonoscopy?
- Can younger people get bowel cancer?
- What should my GP do about rectal bleeding?
- Does a delay in diagnosis make a difference?
- Could a late diagnosis be medical negligence?
The warning signs
Cancer Council Australia lists the symptoms of bowel cancer as bleeding from the rectum or blood after a bowel movement, a change in bowel habit such as constipation or diarrhoea, abdominal pain or bloating, unexplained weight loss or loss of appetite, and signs of anaemia such as unexplained tiredness or breathlessness. It also notes that symptoms don’t necessarily mean cancer, and that not all bowel cancers cause symptoms.1 Bowel cancer is the second most common cancer in Australia, excluding common skin cancers.1
Where bowel cancer grows, and how it shows up
The large bowel
Pink spots mark places cancer can grow. Where it is can change the symptoms.
- Right side. Cancer here may bleed slowly and silently, showing up as tiredness and low iron rather than visible blood.
- Left side. Cancer here is more likely to change bowel habits or cause visible blood.
- Rectum. Cancer here often causes bright red bleeding, which is easily mistaken for haemorrhoids.
A simplified drawing, not to scale.
What should happen at the GP
Cancer Australia’s optimal care pathway for colorectal cancer, published through Cancer Council Australia, groups symptoms by risk. Rectal bleeding, unexplained anaemia, or a mass in the abdomen or rectum are higher-risk symptoms. Combinations, such as rectal bleeding with a change in bowel habit or weight loss, carry the highest risk. Abdominal pain, bloating, constipation and unexplained weight loss are moderate-risk symptoms.2 People with higher- and highest-risk symptoms should be referred promptly for colonoscopy.2
Definition
Iron-deficiency anaemia means low red blood cells caused by a lack of iron. In adults without an obvious cause, it can be a sign of slow bleeding from the bowel.
In plain terms: low iron is a clue to look for, not just something to top up.
Questions to ask your GP
- Could this be anything other than haemorrhoids?
- Will you examine me, and do I need blood tests?
- Do I need a colonoscopy, and how soon?
- If this doesn’t settle, when should I come back?
Timeframes in Australian guidelines
The optimal care pathway says that where symptoms suggest bowel cancer, referral and colonoscopy should be completed within four weeks, initial investigations within two weeks, and test results given to the patient within one week. Once cancer is confirmed, the patient should see a surgeon within two weeks of the GP’s referral.2
Screening and positive tests
The National Bowel Cancer Screening Program offers a free home test every two years to people aged 45 to 74. A positive result means blood was found, which doesn’t always mean cancer, but it needs follow-up.3 The Australian Commission on Safety and Quality in Health Care notes that the program’s performance framework sets a maximum of 30 days from a positive test to colonoscopy.4 Our guide to colonoscopy sedation complications explains the procedure itself.
Younger people
The risk of bowel cancer rises with age,1 and that can lead to symptoms in younger adults being dismissed. But younger people do get bowel cancer, and symptoms deserve the same thinking at any age.
Worth a GP visit, or urgent
See your GP soon
- Any rectal bleeding that is new or keeps happening
- A change in bowel habit lasting weeks
- Tiredness or breathlessness without a reason
- Losing weight without trying
In plain terms: ask whether you need a colonoscopy.
Emergency
- Heavy bleeding
- Severe abdominal pain
- Vomiting and a swollen tummy
- Being unable to pass wind or poo
In plain terms: go to an emergency department.
Why a delay can matter
The Government says more than 90% of bowel cancers can be successfully treated if found early.3 A delay can allow a cancer to grow or spread, which may mean bigger surgery, chemotherapy, or a worse outlook. But not every delay changes the outcome, and working out whether it did is often the central question.
The colonoscopy found a cancer on the right side of my bowel. The surgeon said it had spread to some lymph nodes. I had surgery, then six months of chemotherapy.
When I got my GP records, the first visit said “PR bleeding, likely haemorrhoids, trial cream”. No examination recorded. At the second visit, my iron was low, and the plan was “iron supplements, review 3 months”. I was never recalled.
The oncologist was careful with her words, but she said she wished she’d seen me a year earlier.
My husband was holding my hand in the car park, the same one where I’d cried after the diagnosis. “It wasn’t you,” he said. “You went back.” I’m in remission now. I still wonder what that year cost.
A composite story, drawn from the experiences of many families I have worked with, combined and changed so that no one can be identified. It does not describe any individual client.
What to look for in the records
Your records are often where the story becomes clear. You have a right to access your own health information. In NSW the Health Records and Information Privacy Act 2002 covers both public and private providers, and the Information and Privacy Commission explains how to ask.5 Our step-by-step guide to getting your medical records in Australia walks you through it.
| Record | Why it matters |
|---|---|
| GP notes | Show what symptoms you reported, whether you were examined, and the plan at each visit. |
| Blood test results | Show iron levels or anaemia, and whether they were followed up. |
| Screening results | Show any positive bowel screening test and what happened next. |
| Referral letters | Show when you were referred and how urgently. |
| Colonoscopy and pathology reports | Show what was found and the stage of the cancer. |
| Treatment records | Show what treatment you needed, which may differ from what earlier diagnosis would have required. |
| Your own diary, photos and messages | Notes made at the time are evidence too. Keep them. |
How the law looks at it
A late bowel cancer diagnosis is not automatically negligence. Many symptoms are common and usually harmless, and doctors make judgment calls. The legal questions are whether your symptoms or test results should have prompted investigation sooner, and whether earlier diagnosis would have made a real difference.
A claim usually turns on three questions: whether the care fell below what peers would widely accept as competent practice (section 5O of the Civil Liability Act 2002 (NSW))6, whether that shortfall probably caused harm you wouldn't otherwise have had (Tabet v Gett)7, and, where it matters, whether you were told the material risks first (Rogers v Whitaker)89. Our guide to how a medical negligence claim works explains each one in plain terms.
In a bowel cancer case, the questions might be: were your symptoms properly assessed, including an examination? Was unexplained anaemia investigated? Was a positive screening test followed up? Were you referred for colonoscopy within a reasonable time? Were you told to come back, and was there a system to recall you?
In plain terms, the question is whether, if the cancer had been found when it should have been, it would probably have been at an earlier stage, with less treatment or a better outlook. That usually needs expert evidence about how the cancer would have looked earlier.
For a late diagnosis case, consent is usually less central than whether the right tests were offered.
Who can claim, and when
The person diagnosed can claim. If they have died, their family may have a claim. In NSW, time usually runs from when you knew, or ought to have known, enough to claim, not from the treatment itself, and courts can sometimes extend it, so an old injury may still count. See time limits in NSW or other states, and ask early.
More: complaint or claim? · how a claim is paid for · what a claim can cover
In my practice
In bowel cancer files, I often see the same pattern: bleeding called haemorrhoids without an examination, low iron treated with tablets without asking why, and no recall when the patient didn’t come back. Each step can seem reasonable on its own. Laid out in order, the record often shows a year or more when the answer was within reach.
Both things can be true
Your GP may have been kind and careful in many ways, and still have missed signs that should have led to a colonoscopy. You can value that relationship and still want to know why it took so long.
The bigger picture
Bowel cancer screening has expanded to people from age 45,3 and waiting times for colonoscopy have been a recognised problem.4 Complaints about care in NSW can go to the Health Care Complaints Commission,10 and you can check a doctor’s registration on the Ahpra public register.11
Our missed and delayed diagnosis page brings together related guides, including failed diagnosis and pathology errors.
Support
You don't have to work through this alone. These services can help:
- Lifeline, 24-hour crisis support: 13 11 14 (listed on healthdirect's helplines page)12
- Beyond Blue, anxiety and depression support: 1300 22 4636
- Medicare Mental Health, help finding mental health support: 1800 595 212
- healthdirect, 24-hour nurse advice: 1800 022 222
- Health Care Complaints Commission (NSW): 1800 043 159
A mother who went back to her GP twice now knows that she did everything she could. You deserve that certainty too.
With care,
Rosemary
Frequently asked questions
What are the early signs of bowel cancer?
Rectal bleeding, a change in bowel habit, abdominal pain or bloating, weight loss, and tiredness from anaemia.
How quickly should I get a colonoscopy?
Australian guidelines say within four weeks where symptoms suggest bowel cancer.
What happens after a positive bowel screening test?
You should be referred for a colonoscopy. The program aims for this within 30 days.
Can haemorrhoids hide bowel cancer?
Yes. Bleeding from bowel cancer can be mistaken for haemorrhoids, so ongoing bleeding should be investigated.
Does a delayed diagnosis change the outcome?
Sometimes. It depends on how the cancer would have looked earlier, which needs expert evidence.
Can I claim for a late bowel cancer diagnosis?
You may well have a claim if care fell below the accepted standard and earlier diagnosis would probably have made a difference.
Questions about a late bowel cancer diagnosis?
When you're ready, and not before, I can look at what happened and help you understand your options.
Missed and delayed diagnosis guides
- “They said it was haemorrhoids”: When bowel cancer is diagnosed late (you are here)
- “They said it was a pulled muscle”: Missed blood clots (DVT and PE)
- Failed diagnosis: when a missed diagnosis causes harm
- Cauda equina misdiagnosis: when back pain red flags are missed
- Misdiagnosed UTI: when a delayed diagnosis leads to kidney damage
- Sepsis and leg removal: when is that medical negligence?
Part of our guide to missed and delayed diagnosis. Not sure where you stand? Try the free claim checker.
References
- Cancer Council Australia. Early detection of bowel cancer.
- Cancer Council Australia. Optimal care pathway for people with colorectal cancer: quick reference guide.
- Australian Government Department of Health. About the National Bowel Cancer Screening Program.
- Australian Commission on Safety and Quality in Health Care. Reducing waiting time for colonoscopy after positive FOBT.
- Information and Privacy Commission NSW. Fact sheet: Accessing your health information in NSW.
- Civil Liability Act 2002 (NSW) s 5O, Standard of care for professionals.
- Tabet v Gett [2010] HCA 12.
- Rogers v Whitaker [1992] HCA 58; (1992) 175 CLR 479.
- Australian Commission on Safety and Quality in Health Care. Informed consent.
- Health Care Complaints Commission NSW. Home page.
- Australian Health Practitioner Regulation Agency. Register of practitioners.
- healthdirect Australia. Mental health helplines.
Stories in this article are composites, drawn from the experiences of many families I have worked with, combined and changed so that no one can be identified. They do not describe any individual client.
Dr Rosemary Listing, PhD (Law), Medical negligence lawyer since 2014 · Of Counsel, Peter Evans & Associates. Rosemary's doctorate examined patterns of failure in medical negligence, and she teaches health law at the University of Newcastle. She is not medically qualified. About Rosemary.
Last updated: 10 November 2026 · First published: 10 November 2026 · Next review: May 2027
Cite this article: Listing R. “They said it was haemorrhoids”: When bowel cancer is diagnosed late. Reframe Legal. Published 10 November 2026. https://reframelegal.com/bowel-cancer-late-diagnosis/
This article is general information, not legal or medical advice. It does not create a lawyer–client relationship. Speak to your treating clinicians about your health, and get legal advice about your own situation.
If you are in danger or need urgent medical help, call 000. For crisis support, call Lifeline on 13 11 14.
Legal services are provided by Peter Evans & Associates.