Medical Oncologist
During treatment
How response is monitored during neoadjuvant chemotherapy
Response is tracked mostly by examining the breast before every cycle and measuring what can be felt, with a scan usually added partway through the course. The real answer comes from the tissue removed at surgery. This page explains each check, what triggers a change of plan, and why nothing before surgery counts as proof.
NG
Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed September 2026, next review due September 2027
17+specialists on panel
15,000+patients treated
35+centres across Telangana & AP
4.8★ / 800+Google rating
On this page
The short answer
How do they know the chemotherapy is working?
Mostly by examining the breast before every cycle and measuring what can be felt. A scan is usually added partway through the course, and sometimes another near the end. The removed tissue at surgery gives the real answer, and everything before that is an estimate.
Why the hands-on examination matters most
It happens most often. Your oncologist feels the lump before each cycle and records its size, so a trend builds up over months rather than resting on one picture. A lump that is softening and shrinking cycle by cycle is the most reassuring thing in this whole process.
What the scan adds
It sees what the hand cannot, particularly for cancers sitting deep in the breast and for the lymph nodes in the armpit. It is also the only way to judge response where the lump was never easy to feel in the first place.
The methods
What is used to track the response
Each has a different job, and none of them is the final word.
Clinical examination
Before every cycle. Quick, free, and repeated often enough to show a trend. Ask what the measurement was and whether it has changed since last time.
Ultrasound
The usual choice for a mid-treatment check. It is quick, involves no radiation, and measures both the breast lump and the nodes in the armpit.
Good for
- Measuring a shrinking lump
- Watching the armpit nodes
- Repeating often without concern
MRI
The most accurate picture of how much disease remains, used where the answer will change the operation. Not every centre uses it routinely, and it is not needed for everyone.
Ask whether an MRI would change your surgery.Your own observation
Many women feel the lump softening before anyone measures a difference. Tell your team what you are noticing, including if you think it is getting larger. You are not being a nuisance.
Not sure whether this applies to you?
Ask an oncologistThe schedule
When each check usually happens
-
Before the first cycle
The starting measurements are recorded, and a marker clip is placed in the tumour. Everything later is compared against this point, so ask for the starting size to be written down.
-
Before each cycle
An examination of the breast and armpit, alongside the blood tests that decide whether the cycle goes ahead. This is where most of the monitoring actually happens.
-
Around the midpoint
Usually a scan, most often an ultrasound. This is the formal check on whether the plan should continue unchanged, and the point at which a change of drugs would be considered.
-
Near the end of the course
A further scan in many centres, to plan the operation. It maps what is left and where it sits, which determines how much tissue has to come out.
-
At surgery
The tissue removed is examined under a microscope. This is the only assessment that counts as the answer, and it is the reason the whole approach was chosen.
Words you will hear
The vocabulary, in plain language
- Partial response
- The cancer has shrunk meaningfully but is still there. This is a good result and the most common one.
- Stable disease
- Not obviously smaller, not obviously bigger. It prompts a discussion rather than an immediate change.
- Progression
- The cancer has grown during treatment. Uncommon, and it does lead to a change of plan.
- Clinical complete response
- Nothing can be felt or seen on a scan. Encouraging, but microscopic cancer very often remains, so surgery still goes ahead.
- Marker clip
- The tiny clip placed in the tumour before treatment, so the site can be found even if the lump disappears.
- Interval assessment
- The formal mid-treatment check, usually a scan plus examination.
Leave a number, we will call you
One field. No form to fill in, and no charge for the call.
Talk to our team
Have a question about your situation?
Call the helpline or leave your details, and someone will help you arrange a consultation at the CION centre nearest you. One helpline serves every CION centre.
Call 1800 202 8726
Helpline open 24/7
Side by side
What each finding usually leads to
What the check shows
What usually happens
Clearly shrinking
Continue the plan unchanged
Shrinking slowly
Usually continue, with a further check sooner
No clear change
Discussed at the tumour board; drugs may be switched
Growing during treatment
The plan changes, often to different drugs or earlier surgery
Nothing left to feel or see
Surgery still goes ahead, guided by the marker clip
Being straight with you
What the monitoring cannot tell you
No scan or examination during treatment can tell you how much cancer is actually left. Both routinely overestimate and underestimate. Only the tissue removed at surgery settles it, which is why surgery goes ahead even when everything looks clear.
Why measurements bounce around
A lump is measured by different people, sometimes on different machines, and swelling from the treatment itself can make an area feel larger than the cancer within it. A small change between two measurements is often noise rather than news.
Feeling nothing is not proof
A clinical complete response is genuinely encouraging, but microscopic cancer remains in a substantial number of women whose lump has disappeared entirely. This is the single most common misunderstanding of this stage, and the reason surgery is never cancelled on the strength of it.
What to ask at each visit
What was the measurement today, how does it compare with last time, and is the plan unchanged. Three short questions, asked every cycle, give you a clearer picture than any single scan report.
Commonly believed
What families assume about the checks
If the lump has gone, surgery can be cancelled.
Microscopic cancer very often remains where the lump can no longer be felt, and no scan can rule that out. Surgery is what confirms the response and removes what is left. This is why the marker clip was placed before treatment began.
No scan this month means nobody is watching.
The examination before every cycle is the main monitoring, and it happens far more often than scanning would. Scans are added at points where the answer would change something. Ask what today's examination showed and you will see the tracking is there.
Slow shrinking means the drugs are wrong.
Different subtypes respond at very different speeds, and hormone sensitive cancers in particular shrink slowly. Steady, modest shrinking over several cycles is a normal and acceptable response, not a reason to change course.
We should pay for a PET-CT to be certain.
It is not more reliable for judging response in the breast, and it finds harmless bright areas often enough to start a chain of further tests. If you want more certainty, ask whether an MRI would change your operation, which is a question with a real answer.
Questions we are asked
Common questions about monitoring the response
How soon should I expect to feel a difference?
Many women notice softening within the first two or three cycles, though it varies a great deal by subtype. Triple negative and HER2 positive cancers often respond visibly and quickly. Hormone sensitive cancers shrink slowly, and that is expected rather than disappointing.
Will I be told the measurements?
Usually only if you ask, because the team is tracking a trend rather than reporting each figure. Ask for the number at each visit and note it down yourself. Seeing your own list of measurements is more reassuring than any single conversation.
Should I ask for an MRI?
Ask whether it would change your operation. If the answer is yes, it is a reasonable request. If your surgery plan is already settled regardless, the scan adds cost and waiting without changing anything your team will do.
The lump feels bigger. Should I be worried?
Tell your team this week rather than waiting for the next cycle. It is often swelling from the treatment rather than growth, but genuine progression does need acting on quickly. This is exactly the kind of thing you should report without hesitating.
Do the nodes in my armpit get checked too?
Yes, both by examination and on the ultrasound. Nodes that were involved at the start and have become normal is a good sign, and it may reduce how much armpit surgery you need. Ask specifically what the nodes are doing.
What if the scan result and the examination disagree?
It happens, and neither is definitive. Your team reads them together, alongside the trend over several cycles. Where the disagreement matters for surgery, an MRI or a discussion at the tumour board usually settles the plan.
Does a blood test show whether it is working?
Not usefully in early breast cancer. The blood tests before each cycle check whether your body can safely take the treatment, not whether the cancer is responding. Tumour marker tests are not used for this purpose here.
Can I see the scan images myself?
Yes, ask the imaging department for copies and ask your oncologist to point out the area on screen. Many women find seeing the change directly does more for their confidence than being told a number.
Meet the Specialists
17+ senior cancer specialists. One panel for your case.
Trained at AIIMS, Tata Memorial, and leading international centres. Combined 150+ years of experience. Every complex case is reviewed by 3+ of them — together.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
Surgical Oncologist
Surgical Oncologist
Dr. Vinay Mamidala
MBBS, MS(General Surgery), M.Ch(Surgical Oncology), FMAS, FARIS(Ongoing)
Surgical Oncologist
Radiation Oncologist
Radiation Oncologist
Radiation Oncologist
Hematologist
Surgical Oncologist
Dr. Vajja Sandeep Kumar
MBBS, MS (General Surgery), DrNB (Surgical Oncology), FALS Oncology
Surgical Oncologist
Want a specific doctor for your case? Mention them when booking.
Book Free ConsultationBook an appointment with our specialist
Share your name and number — we'll call you back within 30 minutes to schedule your consultation.
Where to find us
Our centres in and around Hyderabad
Addressed by landmark, because that is how this city navigates. Each centre also names the areas it serves, so you can place it without a map. Consultation and day-care Chemotherapy run at every one of them.
Warangal
Vizag
Talk to our team
Speak to a breast cancer specialist
Call the helpline or leave your details, and someone will help you arrange a consultation at the CION centre nearest you. One helpline serves every CION centre.
Call 1800 202 8726
Helpline open 24/7
Sources
- Cancer Research UK — Chemotherapy before surgery for breast cancer
- National Cancer Institute — Neoadjuvant therapy
- Breast Cancer Now — Chemotherapy before surgery
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.