Receiving a breast cancer diagnosis can be overwhelming, especially when the treatment plan is different from what you expected. One question many patients ask is, "Why am I being advised to have chemotherapy before surgery? Shouldn't the tumour be removed first?"
It is a very understandable concern. However, in many cases, starting chemotherapy before surgery is not a delay in treatment. It is a carefully planned approach that can improve the effectiveness of treatment and lead to better long term outcomes.
Understanding Chemotherapy Before Surgery
Chemotherapy given before surgery is known as neoadjuvant chemotherapy. Instead of removing the tumour immediately, doctors first use medication to destroy cancer cells and shrink the tumour.
This approach is recommended only when it offers a clear advantage based on the type of breast cancer, the size of the tumour, whether lymph nodes are involved, and other biological features of the cancer.
Every treatment plan is personalised because every breast cancer behaves differently.
Why Your Doctor May Recommend Chemotherapy First
To Shrink the Tumour
One of the biggest benefits of chemotherapy before surgery is reducing the size of the tumour. A smaller tumour can make surgery less extensive and, in many cases, increase the possibility of breast conserving surgery instead of a mastectomy.
For many women, this means preserving more of their natural breast while still achieving excellent cancer control.
To Treat Cancer Throughout the Body Early
Breast cancer treatment is not only about removing the visible tumour. Sometimes, tiny cancer cells may have travelled elsewhere in the body but are too small to be detected on scans.
Starting chemotherapy early allows these microscopic cancer cells to be treated from the very beginning, reducing the risk of future recurrence.
To Assess How the Cancer Responds
Another important advantage of chemotherapy before surgery is that it allows doctors to see how the tumour responds to treatment.
If the tumour shrinks significantly or disappears completely, it indicates that the chosen treatment is working well. If the response is less than expected, doctors can use this information to plan additional therapies after surgery.
This helps make treatment even more personalised.
To Reduce Lymph Node Involvement
If breast cancer has spread to nearby lymph nodes, chemotherapy may shrink or eliminate cancer in those nodes before surgery.
In some patients, this can reduce the extent of lymph node surgery, lowering the risk of long term complications such as arm swelling or reduced shoulder movement.
Which Patients Are More Likely to Benefit?
Not everyone with breast cancer needs chemotherapy before surgery.
Approach is commonly recommended for patients with:
1. Large breast tumours
2. Cancer that has spread to nearby lymph nodes
3. Triple negative breast cancer
4. HER2 positive breast cancer
These types of breast cancer often respond very well to chemotherapy, making preoperative treatment particularly beneficial.
Does Chemotherapy Before Surgery Mean the Cancer Is More Serious?
This is one of the most common misconceptions.
Being advised to have chemotherapy before surgery does not automatically mean that the cancer is more advanced or harder to treat.
Instead, it means your medical team has determined that beginning with chemotherapy is likely to provide the greatest benefit for your specific type of breast cancer. Surgery remains an essential part of treatment, but it is performed after chemotherapy has created the best possible conditions for a successful outcome.
Dr. Pragati Singhal
