Medical Oncologist
Before your operation
Understanding your surgical consent form
You are agreeing to a named operation, to the anaesthetic, and to certain things being done if the surgeon finds something unexpected once you are asleep. That last part is the one people skim and the one that matters most. This page explains each section, and what you can decline without affecting your care.
MM
Medically reviewed by Dr. Muralidhar MuddusettyConsultant Surgical Oncologist · MBBS (AIIMS), MS (Surgery, AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh) · last reviewed September 2026, next review due September 2027
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The short answer
What am I actually agreeing to?
You are agreeing to a named operation, to the anaesthetic, and to certain things being done if the surgeon finds something unexpected once you are asleep. That last part is the one people skim, and it is the one that matters most.
Why the risk list looks so alarming
The form lists rare complications because the law requires you to be told about them, not because they are likely. A serious complication in breast surgery is uncommon. Read the list as a legal record of what was discussed rather than a forecast.
The clause worth reading twice
Most forms include permission for additional procedures that become necessary during the operation. For breast surgery that usually means clearing the armpit or removing the nipple if a rapid test finds cancer. Agree in advance what you want done.
What consent is not
It is not a waiver. Signing does not remove your right to good care, and it does not prevent you from raising a concern afterwards. It also is not permanent: you can withdraw consent at any time before the operation.
If the form is handed to you to sign in the same minute it is explained, ask for time to read it.On the form
The wording, in plain language
- Proposed procedure
- The named operation. Check the words and the side. This is the line to read most carefully.
- Additional procedures
- Things the surgeon may do if needed once you are asleep. For breast surgery, usually armpit clearance or removing the nipple.
- Intended benefits
- What the operation is meant to achieve. For cancer surgery this should say removing the cancer, not curing it.
- Serious or frequently occurring risks
- The list. Serious means uncommon but important; frequent means likely but minor, such as bruising.
- Anaesthesia
- A separate consent in some hospitals, covering the anaesthetic itself rather than the surgery.
- Tissue retention and research
- Permission to keep leftover tissue for teaching or research. This is usually optional and you can decline without affecting your care.
Before you sign
What to check on the form itself
Four checks, and they take two minutes.
The operation and the side
Read the named procedure and the left or right. Wrong-side surgery is rare precisely because this is checked repeatedly, and you are one of the checks. Say something if it does not match.
The additional procedures line
Make sure you know what could be added, and that you agree. If you do not want your armpit cleared without being asked again, say so and have it written on the form.
You can strike out and initial what you do not agree to.That you have had your questions answered
You are signing to say the operation was explained. If it was not, do not sign yet. Ask for the conversation first; that is what the signature records.
Who signed as the clinician
Ideally someone able to perform the operation. Ask who will actually be operating on you, since it is not always the person taking the consent.
Ask for a copy
- Take a photograph of the signed form
- Keep it with your reports
- Check it again on admission
Not sure whether this applies to you?
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Side by side
Reading the risk list sensibly
Likely, and minor
Uncommon, and listed because it is serious
Bruising, swelling and soreness
Bleeding needing a return to theatre
A numb patch on the inner upper arm
Lasting arm swelling
Fluid collecting under the wound
Wound infection needing admission
A scar that is red for months
Skin or nipple loss after reconstruction
Shoulder stiffness that responds to exercises
A clot in the leg or lung
Being straight with you
What the form cannot do
It cannot tell you your own risk. The list is generic, written for everyone having that operation, and a healthy woman having a lumpectomy faces a very different picture from someone with diabetes having a mastectomy with reconstruction.
Signing does not give up any right
People sometimes believe consent means accepting whatever happens. It does not. It records that the operation and its risks were explained to you. Poor care remains poor care whatever you signed.
You can decline parts of it
Tissue retention for research is usually optional. So, sometimes, is photography for teaching. You can strike through what you do not agree to and initial it, and this should not affect your care in any way.
Withdrawing is always allowed
Up to the moment of the anaesthetic. If you change your mind, say so as early as you can and explain why, because the reason is often something the team can address rather than a reason to cancel.
Keep your own copy
Photograph the signed form before you hand it back, and keep it with your reports. On admission you will be asked to confirm the operation and the side again, and having the form to check against is genuinely useful. It also matters later if you move hospital, because the next team can see exactly what was agreed and what was done.
Commonly believed
What people think they are signing
Signing means I cannot complain if something goes wrong.
It does not. Consent records that the operation and its risks were explained to you. It is not a waiver, and it has no bearing on your right to raise a concern or to expect a proper standard of care.
The long risk list means this is a dangerous operation.
The list exists because you must be told about rare events, not because they are likely. Breast surgery is among the safer operations. Ask your surgeon which of the listed risks actually apply to someone in your situation.
I have to accept every line to have the surgery.
Optional parts, such as keeping tissue for research or photography for teaching, can be declined without affecting your care. Strike them through and initial. The core operation and anaesthetic are what you must agree to.
Once signed, it is too late to change my mind.
You can withdraw consent at any point before the anaesthetic. Say so as early as possible and explain what changed, because it is very often something the team can resolve rather than a reason to cancel the operation.
Questions we are asked
Common questions about consent
Can I take the form home to read?
Usually yes, and asking is entirely reasonable if it is given to you at the same appointment as the explanation. Many units deliberately consent at one visit and confirm on admission, which gives you time. If you feel rushed, say so.
What if the side written down is wrong?
Say so immediately and do not sign until it is corrected. This is exactly why you are asked to confirm it, and why your surgeon marks the side with a pen while you are awake. Nobody will think you are being difficult.
Who is allowed to take my consent?
Someone who understands the operation well enough to explain it, ideally a clinician capable of performing it. If the person consenting you cannot answer your questions, ask to speak to the surgeon before signing.
What does consenting to additional procedures mean?
That the surgeon may do more if they find something unexpected while you are asleep, usually clearing the armpit or removing the nipple. Discuss beforehand what you would want, and have any limits written on the form.
Can my husband or son sign for me?
No, if you are an adult able to make your own decisions. Consent is yours to give. Family can be present and involved, and should be, but the decision and the signature belong to you.
Should I agree to photographs?
It is your choice and it is optional. Clinical photographs can be genuinely useful for planning reconstruction and tracking healing. If you agree, ask how they will be stored and whether they could be used for teaching.
What if I do not read English well?
Ask for an interpreter, and ask in advance so one is arranged. Consent given through a form you could not read is not proper consent. A family member translating is common but a trained interpreter is better for something this important.
Do I get a copy?
You should be offered one. If not, ask, or photograph the signed form with your phone. Keep it with your reports, and check it again on admission against what you remember agreeing.
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
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Sources
- Cancer Research UK — Consent to cancer treatment
- National Cancer Institute — Informed consent
- Breast Cancer Now — Preparing for breast 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.