Treatment FAQ

how does radiation work in cancer treatment

by Bethany Kling Published 3 years ago Updated 2 years ago
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Radiation therapy works by destroying cancer cells and damaging a cancer cell’s DNA so that it stops dividing and growing. Radiation therapy can shrink a tumour or completely destroy it.

At high doses, radiation therapy kills cancer cells or slows their growth by damaging their DNA. Cancer cells whose DNA is damaged beyond repair stop dividing or die. When the damaged cells die, they are broken down and removed by the body. Radiation therapy does not kill cancer cells right away.Jan 8, 2019

Full Answer

How long does it take to recover from radiation treatment?

The general effects of radiation therapy like fatigue, nausea, and headaches resolve fairly quickly after treatment. Your body just needs time to process the radiation but can recover within a few weeks. Delayed side effects of radiation therapy, on the other hand, may require further treatment to alleviate.

What to expect when having radiation therapy?

What to Expect During Radiation Therapy Treatment

  • Before Radiation Therapy. At Affiliated Oncologists, each treatment plan is created to meet the individual needs of the patient, but there are some steps that are taken for each patient.
  • During Radiation Therapy. There are two main types of radiation therapy: external beam radiation and internal radiation therapy.
  • After Radiation Therapy. ...

What are the side effects of radiation treatment?

With that said, some common side effects of radiation therapy for lung cancer include:

  • General weakness and fatigue
  • Dry, red, itchy or peeling skin
  • Shortness of breath
  • Swallowing difficulties
  • Sore throat
  • Shoulder stiffness
  • Radiation pneumonitis (coughing, fever and a sensation of fullness in the chest that can occur several weeks or months after radiation therapy)
  • Radiation fibrosis (lung scarring)

What types of cancer may be caused by radiation?

  • Radiation cystitis. If the radiation damages the lining of the bladder, radiation cystitis can be a long-term problem that causes blood in the urine or pain when passing urine.
  • Urinary incontinence. ...
  • Fistulas. ...

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At what stage of cancer is radiotherapy used?

Radiotherapy may be used in the early stages of cancer or after it has started to spread. It can be used to: try to cure the cancer completely (curative radiotherapy) make other treatments more effective – for example, it can be combined with chemotherapy or used before surgery (neo-adjuvant radiotherapy)

Is radiation therapy painful?

Does radiation therapy hurt? No, radiation therapy does not hurt while it is being given. But the side effects that people may get from radiation therapy can cause pain and discomfort. This booklet has a lot of information about ways that you and your doctor and nurse can help manage side effects.

Is radiation worse than chemo?

The radiation beams change the DNA makeup of the tumor, causing it to shrink or die. This type of cancer treatment has fewer side effects than chemotherapy since it only targets one area of the body.

What is the success rate of radiation therapy?

“In fact, based on the literature reviewed, it appears that external-beam radiation therapy is a superior treatment in some cases. “When patients are treated with modern external-beam radiation therapy, the overall cure rate was 93.3% with a metastasis-free survival rate at 5 years of 96.9%.

Do tumors grow back after radiation?

Normal cells close to the cancer can also become damaged by radiation, but most recover and go back to working normally. If radiotherapy doesn't kill all of the cancer cells, they will regrow at some point in the future.

What can you not do during radiation treatment?

Avoid raw vegetables and fruits, and other hard, dry foods such as chips or pretzels. It's also best to avoid salty, spicy or acidic foods if you are experiencing these symptoms. Your care team can recommend nutrient-based oral care solutions if you are experiencing mucositis or mouth sores caused by cancer treatment.

Do you lose hair with radiation?

Radiation therapy can also cause hair loss on the part of the body that is being treated. Hair loss is called alopecia. Talk with your health care team to learn if the cancer treatment you will be receiving causes hair loss.

Why do oncologists push chemo?

An oncologist may recommend chemotherapy before and/or after another treatment. For example, in a patient with breast cancer, chemotherapy may be used before surgery, to try to shrink the tumor. The same patient may benefit from chemotherapy after surgery to try to destroy remaining cancer cells.

How long does it take for a tumor to shrink after radiation?

At the same time, if a cell doesn't divide, it also cannot grow and spread. For tumors that divide slowly, the mass may shrink over a long, extended period after radiation stops. The median time for a prostate cancer to shrink is about 18 months (some quicker, some slower).

What is life expectancy after radiation therapy?

Median follow-up time for this report was 41 months (range=14.6-59.0). Following treatment with stereotactic radiation, more than eight in ten patients (84%) survived at least 1 year, and four in ten (43%) survived 5 years or longer. The median overall survival (OS) time was 42.3 months.

Does radiation therapy shorten lifespan?

Chemotherapy and radiation are two of the most common treatments for cancer. But these and other therapies can also cause survivors to age faster and die sooner, suggest new study findings published in the journal ESMO Open, reports HealthDay.

What are the disadvantages of radiation therapy?

What are the disadvantages? Radiotherapy can cause side effects, including tiredness, sickness and runny poo (diarrhoea). If you have chemoradiotherapy, you may get side effects from the chemotherapy.

What Is Radiation Therapy?

Radiation therapy uses high-energy particles or waves, such as x-rays, gamma rays, electron beams, or protons, to destroy or damage cancer cells.Yo...

Who Gets Radiation Therapy?

More than half of people with cancer get radiation therapy. Sometimes, radiation therapy is the only cancer treatment needed.

What Are The Goals of Radiation Therapy?

Most types of radiation therapy don’t reach all parts of the body, which means they’re not helpful in treating cancer that has spread to many place...

How Is Radiation Therapy given?

Radiation therapy can be given in 3 ways: 1. External radiation (or external beam radiation): uses a machine that directs high-energy rays from out...

Who Gives Radiation Therapy Treatments?

During your radiation therapy, a team of highly trained medical professionals will care for you. Your team may include these people: 1. Radiation o...

Does Radiation Therapy Cause Cancer?

It has long been known that radiation therapy can slightly raise the risk of getting another cancer. It’s one of the possible side effects of treat...

Does Radiation Therapy Affect Pregnancy Or Fertility?

Women: It’s important not to become pregnant while getting radiation – it can harm the growing baby. If there’s a chance you might become pregnant,...

Questions to Ask About Radiation Therapy

Before treatment, you’ll be asked to sign a consent form saying that your doctor has explained how radiation therapy may help, the possible risks,...

Will I Be Radioactive During Or After External Radiation Treatment?

External radiation therapy affects cells in your body only for a moment. Because there’s no radiation source in your body, you are not radioactive...

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