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Dicas para vencer o câncer de intestino

Claro que ninguém quer ter câncer, e você pode acreditar que é mais fácil não pensar nisso. Mas câncer de intestino não desaparece só porque você a ignora. E se você a tiver, obter tratamento cedo pode salvar sua vida. Isso também significa que você provavelmente precisará de um tratamento menos extremo, com menos efeitos colaterais.

Sintomas do câncer de intestino

Bowel cancer is the third most common cancer in the UK - one in 19 women and one in 14 men will be diagnosed with it at some point. Some cancers are hard to spot until a very late stage - pancreatic cancer and lung cancer are good examples. Sadly, the later your cancer is diagnosed, the worse the outcome is likely to be.

Bowel cancer usually starts in your colon (large bowel) or rectum (just inside your bottom) and symptoms include:

  • Bleeding or passing mucus from your back passage.

  • A change from your usual bowel habit, particularly to looser or more frequent stools (poos).

  • Dor de barriga.

  • Losing weight, being tired or losing your appetite for no reason.

Rastreamento de câncer de intestino

Ao rastrear pessoas com alto risco de câncer de intestino, treatment can be offered at a much earlier stage, when it's less invasive, has fewer side effects and is more likely to offer a cure. That's why the NHS has introduced a national bowel cancer screening programme.

In England, Wales and Northern Ireland, everyone is invited to take part in NHS bowel cancer screening every two years from the ages of 60-74. In Scotland everyone from 50-74 is invited to take part. There are two ways people are invited to have bowel cancer screening. The standard one is a test called FOB (faecal occult blood) which looks for tiny traces of blood in your stool.

One of the early signs of bowel cancer can be tiny amounts of blood, too small for you to see. They happen because tumours are made up of abnormal cells which don't have the same protective cover as normal bowel. That means they're more likely to bleed when your stool rubs against them. Blood from just inside your back passage tends to be bright red, and you see it on the outside of your stool, on toilet paper when you wipe yourself or in the pan. Blood from higher up in your bowel turns dark red or black by the time it comes out - large amounts can lead to black, tarry stools. But small amounts may not be visible - and that's where the FOB test comes in.

The invitation for FOB screening will come in the post every two years, and includes everything you need to do the test. It usually involves collecting three tiny samples of separate stools onto a special card (some cancers don't bleed all the time, so three samples from different days gives a more accurate result). You then pop the card into the hygienically sealed freepost envelope provided and send it off. It's estimated if everyone invited took the NHS bowel screening test, we could cut death rates from bowel cancer by 16%!

Taking aspirin to reduce the risk of bowel cancer

Tomar um comprimido diário de 'aspirina infantil' (75 mg) pode reduzir o risco de câncer de cólon ou reto. Estudos recentes sugerem que tomar essa dose diariamente por 10 anos, entre as idades de 50 e 65 anos, pode reduzir o risco de câncer intestinal by a third. If you've had a heart attack or stroke, you should definitely be taking this anyway unless there's a medical reason you shouldn't. However, aspirin does carry a risk of bleeding from the stomach, so for some people the risks might outweigh the benefits. Speak to your doctor before you start on a regular dose.

What does an abnormal FOB test result mean?

About 49 out of 50 will have a normal bowel cancer screening result, which you’ll receive in the post within around two weeks. Sometimes the result is uncertain and you’ll be asked to repeat the test - most people who do this end up having a normal result. If you're one of the remaining few who have an abnormal result, you'll be invited to see a specialist for a procedure called a colonoscopy - this involves taking medicine to clean your bowel out and putting a thin flexible telescope into your bowel through your bottom. About 90% of people who have this are found not to have bowel cancer.

Bowel scope screening

The other bowel cancer screening test is a bowel 'scope' which is being rolled out in England as a one-off test at the age of 55. It's rather like a colonoscopy but is even quicker and easier. You empty the lower end of your bowel using an enema just before the scope, and don't need an anaesthetic.

Porque permite que pequenos pólipos que poderiam se tornar cancerosos sejam removidos, faz ainda mais do que detectar o câncer precocemente, quando é mais tratável. Na verdade, previne o câncer. Pessoas que fazem uma colonoscopia única têm 35% menos probabilidade de serem diagnosticadas com câncer de intestino e 40% menos probabilidade de morrerem por causa dele - e os benefícios duram pelo menos 17 years. It's all over in under half an hour and most people say it's only mildly uncomfortable. I'd call that a very small price to pay for peace of mind.

Com agradecimentos à revista 'My Weekly', onde este artigo foi originalmente publicado.

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Dra. Sarah Jarvis

Consultora Clínica

MA (Cantab), BM, BCh (Oxon), DRCOG, FRCGP, MBE

Após se formar em medicina em Cambridge e Oxford, a Dra. Sarah Jarvis MBE tornou-se médica de clínica geral.

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Dr Hayley Willacy, FRCGP

Médico Generalista, Autor Médico

MBChB (1992), DRCOG, DFFP, MRCOG (Part 1) MRCGP (2007), DFSRH (2013), MSc - medical education (2020)

A Dra. Hayley Willacy era uma médica do NHS atuando no noroeste da Inglaterra, que se aposentou da prática clínica em 2022 após 30 anos. 

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