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Conversion from robotic to open surgery: what it means | CION Cancer Clinics
A robotic operation is converted to open surgery when the surgeon judges it safer to finish through a larger cut. Scar tissue, bleeding, a tumour stuck to nearby organs or how your body copes with the operation can all be reasons. It is a safety decision, not a failure. This page explains why it happens, what changes for your recovery, and what to ask before the day. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
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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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On this page
- Why would a robotic operation be switched to open surgery?
- What can make a switch necessary?
- What changes for you if the operation was switched?
- What do families often believe about being switched to open?
- How is a possible switch handled from consent to follow-up?
- Who is more likely to need a switch?
- Common questions about conversion to open surgery
The short answer
Why would a robotic operation be switched to open surgery?
A robotic operation is switched to open surgery when the surgeon judges it is safer to finish through a larger cut. It is a safety decision made during the operation, not a sign that something was done wrong.
What the switch actually involves
The surgeon undocks the robot, which means moving its arms away, and makes an open cut to reach the area directly. Sometimes the switch is to standard keyhole surgery instead. The aim of the operation does not change. The tumour is still removed in the way the team planned, only by a different route.
Why doctors call it conversion
You may see the word conversion on your discharge summary. It simply means the operation started one way and was finished another. Surgeons usually discuss the possibility before any robotic or keyhole operation, and it is part of the consent form you sign.
What this page cannot tell you
It cannot tell you how likely a switch is in your own operation. That depends on your tumour, your body, earlier operations and the team. Ask your surgeon directly, before the day.
The reasons
What can make a switch necessary?
Most reasons only become clear once the surgeon can see inside. Scans do not show everything.
Scar tissue from earlier operations
Organs can be stuck together by old scar tissue. Freeing them safely can be easier with a direct view and hands in the area.
Bleeding that needs direct control
Some bleeding is best controlled quickly through an open cut. Switching allows the surgeon to press and repair directly.
A tumour larger or more stuck than expected
The tumour may be attached to a nearby organ or blood vessel. Removing it completely can be safer with an open approach.
Often found in
- Large or bulky tumours
- Cancer close to major blood vessels
Your body during the operation
Robotic operations fill the belly with gas. Some people's heart or lungs do not cope well with that, and the anaesthetist may ask for a change.
A poor view
A lot of fat inside the belly, swollen bowel or inflammation can block the surgeon's view. Seeing clearly is essential.
An equipment problem
Rarely, the robot develops a fault. The team is trained to switch safely and carry on.
Not sure whether this applies to you?
Ask an oncologistAfterwards
What changes for you if the operation was switched?
Mainly your recovery. You will wake up with a larger wound than planned, and the first days are usually slower. The cancer part of the operation is still aimed at the same result.
In hospital
Expect more wound pain at first, managed with medicines through a drip, an epidural or tablets. You may stay longer than you would have after a robotic operation. Getting up and walking early, with help, still matters. It lowers the risk of chest infections and blood clots.
At home
A larger wound needs longer before you lift heavy things, drive or return to physical work. Your team will give you advice for your own operation. Family help at home matters more in the first weeks.
The bill and your cover
A longer stay can change the bill, and some robotic charges may still apply. Tell your scheme or insurance desk early, so they can ask for any increase in the approved amount before discharge.
Who it may not suit: if your surgeon thinks a switch is very likely for you, they may advise planning open surgery from the start.Commonly believed
What do families often believe about being switched to open?
"The surgeon failed, so the operation went wrong."
Switching when it is safer is good surgical judgement. Carrying on with the robot when it is no longer safe would be the real mistake.
"Now the cancer will not have been removed properly."
The aim of removing the tumour stays the same. Often the switch is made exactly so the tumour can be removed completely. The tissue report will show what was found.
"We paid for robotic surgery, so it should never happen to us."
A switch can happen with any keyhole or robotic operation, whatever it costs. Ask about it before the day so the family is prepared.
"The team should have known from the scans."
Scans show a great deal but not everything. Scar tissue and how firmly a tumour is stuck often only become clear once the surgeon is looking inside.
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Step by step
How is a possible switch handled from consent to follow-up?
Knowing the order of events helps the family waiting outside theatre understand what they are told.
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Before the operation
The surgeon explains that a switch is possible and asks you to consent to it. Ask how likely it is for you, and what would change if it happened.
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During the operation
If the surgeon decides to switch, the robot is moved away and the operation continues open. The family is usually told once the operation is over.
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Waking up
You may notice a larger dressing and more discomfort than you expected. Ask the team what was done and why. You have a right to know.
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The days on the ward
Pain relief, walking with help, and slowly returning to eating. Your discharge date is set by how you recover, not by the original plan.
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The follow-up visit
The wound is checked and the tissue report is discussed. This is the report that guides any further treatment, whichever method was used.
Side by side
Who is more likely to need a switch?
These are general patterns, not predictions. Someone in the left column may never need a switch, and someone in the right column occasionally will.
More likely
Less likely
Several earlier operations in the belly
No earlier operations in the same area
A large tumour, or one close to major blood vessels
A small tumour with clear space around it
Significant heart or lung disease
Good general fitness for anaesthesia
Much fat inside the belly
A body shape that gives a clear view
!
After going home, do not wait on these
If the wound opens, leaks pus or becomes red and hot, or if you have a fever, shivering, sudden breathlessness, chest pain, a swollen painful calf or belly pain that keeps getting worse, go to the hospital that did the operation or the nearest emergency department the same day. Say that you have recently had cancer surgery. Do not wait for the next clinic visit.
Questions we are asked
Common questions about conversion to open surgery
How often are robotic operations switched to open?
It is uncommon for most operations, but the chance varies a great deal with the operation, the tumour, earlier surgery and the team's experience. A general figure would not tell you much about your own case. Ask your surgeon how likely it is for you before the day.
Will the surgeon ask the family before switching?
Usually not during the operation, because stopping to ask could add risk. That is why the possibility is explained beforehand and included in the consent you sign. The surgeon or team will explain what happened and why once the operation is over.
Does being switched to open mean the cancer had spread?
Not necessarily. Many switches happen because of scar tissue, bleeding, a poor view or how your body copes with the gas. Sometimes it is because the tumour is larger or more stuck than expected. Ask the surgeon the reason, and wait for the tissue report before drawing conclusions.
Will recovery take much longer?
Usually somewhat longer than after a robotic operation, mainly because of the larger wound. You may stay in hospital longer and need more time before heavy lifting or physical work. Your team will guide you based on the operation actually done.
Will we still be charged for the robot?
Often some robotic charges still apply, because instruments may already have been used. A longer stay can add to the bill. Ask before the operation how the estimate would change, and tell your scheme or insurance desk early if a switch happens.
Can we ask the surgeon not to switch?
You can tell the surgeon what worries you, and they will explain their approach. But a switch is made when continuing would be less safe, so refusing it in advance could put you at risk. Talk it through before signing consent rather than on the day.
Is there anything we can do to lower the chance of a switch?
Some things help your fitness for any operation: stopping smoking, staying active, eating well and keeping diabetes and blood pressure under control. Tell the team about every earlier operation. Much of the chance still depends on the tumour and what is found inside.
Should we have chosen open surgery from the start?
Looking back is natural, but the plan was made on what was known at the time. If a switch was likely, your surgeon may have discussed open surgery first. If you have questions about the decision, ask the surgeon at the follow-up visit. They can explain their reasoning.
Meet the Specialists
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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
- National Cancer Institute — Surgery to Treat Cancer
- NHS — Laparoscopy (keyhole surgery)
- Cancer Research UK — Surgery for cancer
- NHS — Deep vein thrombosis (DVT)
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.
Keep reading
Related pages
Is Robotic Surgery Safer?What changes with the robot and what does notRobotic Surgery in Obese or Previously Operated PatientsTwo groups where a switch is more likelySurgeon Experience With the Robot: What to AskQuestions to ask before the dayComplications and Red FlagsWarning signs after surgery and what to do
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