Breast cancer · Radiation therapy

Radiation therapy for breast cancer

Most women now need far fewer sessions than they expect. A five or six week course was once standard. Shorter schedules are now recommended for most people. If travel is your problem, that is the most useful thing on this page to ask about.

Ask about the shorter course
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A bright, open radiotherapy treatment room - CION Cancer Clinics, Hyderabad

The number of sessions is the part of this treatment that has changed most. Fewer, larger doses now give the same result as the long daily courses of a decade ago. That matters enormously if you are travelling in from a district every weekday.

How many sessions will I need?

Three courses in common use. They are equally effective for suitable cancers, so the question is which one fits your life — and that is a fair thing to raise.

Compared on
Conventional25–30sessions
Recommended for most15–16sessions
Shortest5sessions
Spread over
5 to 6 weeks
About 3 weeks
About 1 week
Weekday trips
25 to 30
About 15
Five
Dose each visit
The smallest of the three
Slightly higher
The highest
Typically used for
A more complex area, or when the nodes are treated as well
Most whole-breast treatment after a lumpectomy
Selected early cancers — breast only, no node treatment
Where it stands now
Once the default everywhere. No longer the automatic choice for most whole-breast treatment.
Long-established and well studied. Ask about this one if you have been quoted five or six weeks.
Criteria are specific and it is not open to everyone. Worth asking anyway — five trips instead of thirty changes everything.

It is a clinical decision rather than a preference. But your travel situation is information your radiation oncologist needs, and it does sometimes change the plan.

Two things get confused with the schedule

1 Technique changes the visit, not the count How the dose is shaped and aimed decides how much of your heart, lung and skin is spared, so it drives your side effects. It also decides how long each session takes. Arc-based delivery is quicker on the couch than older step-by-step methods. What it does not change is how many days you come.
2 A smaller area allows a shorter course, but does not force one Large trials have treated part of the breast over the same fifteen sessions as the whole breast. Area and schedule are set separately.
3 Modern technique is what makes short courses possible The one-week and partial-breast regimens exist because the dose can now be shaped precisely enough to deliver them safely. A few go further still. Treating only around where the cancer was, placing the source inside the tissue, or a single dose during the operation.

Ask your radiation oncologistWhat technique is planned, whether a shorter course applies to you, and whether the network can deliver it.

Been told five or six weeks? Bring your reports and ask whether a shorter course is suitable in your case. It is one of the most useful questions on this page, and it takes one consultation to answer.

What one visit actually takes out of your day

The treatment itself is the shortest part of it. Almost nobody is told this, and it is the reason the number of trips matters more than the number of minutes.

  1. Arriving and changing for a radiation session - CION Cancer Clinics
    Step oneArrive and changeYou change into a gown for the upper body. Nothing else about the day requires undressing.
  2. Being positioned on the couch takes longer than the treatment itself - CION Cancer Clinics
    Step twoGetting you in positionThe longest part. You lie still while the team lines you up against the marks made at planning. Usually ten to fifteen minutes.
  3. The treatment itself takes only a couple of minutes - CION Cancer Clinics
    Step threeThe treatment itselfA couple of minutes. You feel nothing at all, you are alone in the room, and the staff can see and hear you throughout.
  4. Going straight home after a radiation session, with no admission - CION Cancer Clinics
    Step fourStraight homeNo admission, no recovery time, no anaesthetic. You are not radioactive afterwards and you are safe around children.

Inside the department, a visit is about twenty minutes. The reason a course feels heavy is everything around it — the travel each way, the wait, and doing it again the next day. If you are coming from a district, count the journey rather than the treatment when you plan.

Before the first session: planning and lying still

There is one appointment before treatment starts where nothing is given. It is also where you find out what the position feels like, which is the part worth preparing for.

The planning setup - CION Cancer Clinics
The appointment A scan, and marks that stay You lie on an inclined support shaped for the chest while a CT scan is taken. Small marks, or tiny permanent dots, are then placed so the team can reproduce that exact position every day. Nothing is treated at this visit. It takes longer than a treatment session will.
Arms above the head - CION Cancer Clinics
The difficult part Both arms held above your head Your arms rest in supports above your head, and that is uncomfortable after breast or armpit surgery. It is what most women find hard about radiation, rather than anything to do with the radiation itself. Doing your shoulder exercises before this appointment makes a real difference.
You are watched on camera and heard throughout, and it stops when you say so - CION Cancer Clinics
If you feel closed in Neither machine is a tunnel The scanner is a short open ring. The treatment head is an open arm with clear space on every side, as in the photograph at the top of this page. You are alone in the room but watched on camera and heard the whole time, and it stops the moment you need it to. Even so, being still can be distressing. Tell the team before the planning appointment rather than during it. The position can often be adjusted, someone can talk to you throughout, and a light sedative is possible where it is genuinely needed.

You are alone in the room, and never unobserved. The staff watch you on camera and can hear you the whole time. The machine stops the moment they need it to, and you can raise a hand or speak at any point. You may be asked to hold your breath for a few seconds at a time, which moves the heart away from the treated area. You will practise that at planning, not on the first day.

What decides which course you are offered

Pick a factor to see how it bears on the number of sessions. Knowing these is what turns the conversation into a two-way one.

Factors

How it bears on the schedule

The starting point for everything. After a lumpectomy, radiation to the breast is almost always part of the plan. After a mastectomy it is added only when there is a specific reason, such as a large cancer or involved nodes.

Worth asking: “Given the operation I had, do I need radiation at all — and if so, to what area?”

Effect on the number of sessionsDecides whether you need any, and whether the chest wall or the nodes are included.

General explanations, not an assessment of your case. Only a radiation oncologist who has seen your reports and your surgery findings can say which course applies to you.

Why it is given at all

The answer is different depending on which operation you had, and the difference matters.

Almost always needed After a lumpectomy The breast is still there, so any cells left in it are what is being treated. This radiation is what makes keeping the breast equivalent to removing it. Comparing the two operations →
After a lumpectomy the whole breast is usually treated - CION Cancer Clinics
After a mastectomy the chest wall is treated, and only for a specific reason - CION Cancer Clinics
Only for a specific reason After a mastectomy Not routine. It is added when the cancer was large, several nodes were involved, or the margins were close. If it has been recommended, ask which reason applies to you.
Travelling in from a district? Tell us where you are coming from before the course is scheduled. Which centre delivers your sessions, and what the daily timing is, are both worth settling in advance.
Plan it with our team 1800 202 8726

Side effects, and what you can still do

Radiation is local, so the effects are mostly local too. That surprises people who are expecting something like chemotherapy.

Pick one

What to expect

The commonest effect by far. The skin over the treated area gradually reddens, darkens or feels tight. It usually builds from about the second week and peaks a week or two after the course finishes.

What helps: a plain unscented moisturiser, loose cotton clothing, and no hot water or soap directly on the area. Tell the team early if it breaks or weeps rather than waiting for the next review.

How long it lastsSettles over several weeks after the course ends. Some permanent darkening is common and it fades a great deal.

General guidance, not instructions for your case. Anything that is worsening, breaking or painful should be shown to your team rather than managed at home.

Talk to our team 1800 202 8726

Read next

Choosing surgery

Why radiation makes them equivalent.

Chemotherapy

Cycles, and what they involve.

Surgery cost

What a surgical bill is made of.

Is it curable?

What curative intent means.

Just diagnosed

What to do in the first seven days.

Costs and cover

The whole course, and scheme cover.

Before the course is scheduled

Ask how many sessions you actually need

Bring your surgery notes and pathology report. A radiation oncologist can tell you whether radiation is needed and which area it would cover. They can also say how many sessions that means, and which centre would deliver them. Tell us where you are travelling from — it is information we need, not a complication.

9 clinics across Hyderabad, within a network of 35+ centres across Telangana and Andhra Pradesh. Radiation is delivered on equipment inside NABH-accredited partner centres, planned and overseen by CION radiation oncologists.

Toll free 1800 202 8726 · Advancing Care. Passionately.