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En bloc spondylectomy for tumours that start in the spine | CION Cancer Clinics
An en bloc spondylectomy removes a whole spine bone with the tumour inside it, in one piece. It is used for some tumours that start in the spine bone itself, such as chordoma and chondrosarcoma, where cutting into the tumour raises the chance of it growing back. This page explains who it is for, how it is planned, and what you may give up. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
MI
Medically reviewed by Dr. Mohammed ImaduddinConsultant Surgical Oncologist · MBBS, MS (General Surgery), MCh (Surgical Oncology) · last reviewed September 2026, next review due September 2027
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On this page
- What is an en bloc spondylectomy?
- Which spine tumours is it used for?
- Why does the planning take so long?
- What might you have to give up, and what are the risks?
- What do families get wrong about this operation?
- What do the words on your report mean?
- What should you ask the team?
- Common questions about en bloc spondylectomy
The short answer
What is an en bloc spondylectomy?
An en bloc spondylectomy removes a whole spine bone, with the tumour inside it, in one piece. It is used for some cancers that start in the spine bone itself, such as a chordoma, where cutting through the tumour raises the chance of it growing back.
Why "in one piece" matters
Most spine operations for cancer scoop the tumour out bit by bit to free the spinal cord. That is reasonable when the cancer has spread from elsewhere and radiotherapy or medicines will treat what is left. A tumour that begins in the bone behaves differently. Tiny spills of tumour into the wound can seed a regrowth. Taking the bone out whole, wrapped in a rim of healthy tissue, lowers that chance.
What the pathology report will say about the edges
After the operation, the specimen is examined for its margin, which is the rim of normal tissue around the tumour. A clear margin means no tumour was found at the edge. That report shapes what treatment, if any, comes next.
Who it does not suit
It is rarely the right operation for cancer that has spread to the spine from another organ. It is also not offered when the tumour wraps around structures that cannot be removed safely, or when the body is not strong enough for a very long operation.
When it is considered
Which spine tumours is it used for?
These tumours are rare. Seeing a team that treats them regularly matters more than the distance you travel.
Chordoma
A slow-growing tumour that starts from leftover tissue of the early spine, most often at the base of the spine or the skull. It responds poorly to chemotherapy, so the first operation carries a lot of weight.
Chondrosarcoma
A cancer of cartilage-forming cells. Like chordoma, surgery with clear edges is the main treatment for most people.
Giant cell tumour of bone
Usually not a spreading cancer, but it can destroy bone and grow back after incomplete removal. Medicines are sometimes used first to shrink it.
Some bone sarcomas
Osteosarcoma and Ewing sarcoma of the spine are usually treated with chemotherapy first. Surgery may follow if the tumour can be removed whole.
Occasionally also
- A single spread from a kidney or thyroid cancer, after careful discussion
Not sure whether this applies to you?
Ask an oncologistBefore the operation
Why does the planning take so long?
A carefully placed biopsy
The needle path for the biopsy is chosen by, or with, the team that will operate. The track may later be removed with the tumour. A biopsy done elsewhere through the wrong route can make the operation harder, so ask before agreeing to one.
Detailed scans
MRI, CT and often a PET-CT or chest CT to check the tumour has not spread. Some centres print or build a model of the spine to plan the cuts.
The tumour board
Spine surgeons, sarcoma specialists, radiation oncologists, radiologists and pathologists agree whether the tumour can be removed whole, and what it would cost you in nerve function.
Blocking the blood supply
Some tumours bleed heavily. A radiologist may block their feeding vessels through a thin tube a day or two before surgery.
Being straight with you
What might you have to give up, and what are the risks?
This is one of the largest operations on the spine. To lift the bone out whole, the surgeon may need to cut nerve roots that leave the spine at that level. The team should tell you in advance exactly which ones, and what that will mean for you.
What losing a nerve root can mean
In the chest, usually a band of numbness around the ribs. In the lower spine or the base of the spine, it can mean weakness in a leg, or changes to bladder, bowel or sexual function. Ask the surgeon to list these for your level in plain words, and write them down.
Other risks
Heavy bleeding, wound breakdown, infection, leakage of the fluid around the cord, clots, chest problems and injury to the spinal cord itself. The rebuilt spine can loosen or break over time and need more surgery. Your surgeon should talk you through the rates at their own centre.
What this page cannot tell you
Whether your tumour can be removed in one piece, or how it will behave afterwards. Only scans, the biopsy and a specialist team can answer that. Ask who will decide, and what the other options would be.
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Commonly believed
What do families get wrong about this operation?
"Let us have a quick operation now and a bigger one later if needed."
With a primary spine tumour, the first operation is often the clearest chance to take it out whole. A partial removal can spill tumour and make a later en bloc operation much harder. Get a specialist opinion before any surgery.
"A slow-growing tumour can simply be watched."
Slow growth still means growth. Chordoma in particular can press on nerves over time. Waiting may be reasonable in some cases, but that should be a decision made with the team, not by default.
"If it is removed in one piece, no more treatment is needed."
Sometimes that is so. Sometimes radiotherapy follows, especially if the margin is close. Regular scans for years afterwards are normal, because these tumours can grow back late.
On your report
What do the words on your report mean?
- Primary spine tumour
- A tumour that started in the spine bone itself, not one that spread there from another organ.
- En bloc
- Removed in one piece, without cutting into the tumour.
- Wide or marginal margin
- Wide means a good rim of healthy tissue surrounds the tumour. Marginal means the edge runs close to it.
- Intralesional
- The tumour was cut into during removal. Your team will explain what that changes.
- Embolisation
- Blocking the blood vessels feeding a tumour before surgery to reduce bleeding.
Before you agree
What should you ask the team?
- Is my tumour a primary spine tumour, and which type?
- Can it be removed in one piece, and how sure are you?
- Which nerves may be cut, and what will I lose?
- How often does your team do this operation?
- Will I need radiotherapy afterwards, and where?
- What are the options if I choose not to have it?
Questions we are asked
Common questions about en bloc spondylectomy
How long is the operation and the hospital stay?
The operation often runs through most of a day, and sometimes it is split into two stages. The hospital stay is usually longer than for other spine surgery, often a couple of weeks or more, including time in intensive care. Your surgeon can give a closer idea once the plan is fixed.
Is en bloc spondylectomy done for chordoma at the base of the spine?
At the base of the spine, the similar operation is usually called a sacrectomy. The principle is the same: remove the tumour whole with a rim of healthy tissue. The nerves at that level control bladder, bowel and sexual function, so the trade-offs need very careful discussion.
Why did the surgeon say not to have a biopsy yet?
Because the route of the biopsy needle matters. With some primary bone tumours, the track can carry tumour cells and may need removing at the main operation. The team that will operate usually wants to plan or do the biopsy themselves. Ask them before any biopsy is booked elsewhere.
Is proton therapy an alternative to surgery?
For some chordomas and chondrosarcomas, high-dose radiotherapy, including proton therapy, is used after surgery or instead of it when surgery is not possible. It is not a direct swap for every patient. Ask your team whether it applies to you and where it would be given.
Will I be able to walk after it?
Many people do walk again after rehabilitation, but nobody can promise it. It depends on the level of the spine, which nerves have to be cut and how strong you were beforehand. Ask the surgeon what they expect in your case, including what a slower recovery would look like.
How often will I need scans afterwards?
Regular MRI scans are normal for many years, because these tumours can grow back late. The gap between scans usually widens over time. Keep every report and bring them to each visit, as comparing scans side by side is how changes are spotted.
Can the family stay during the hospital stay?
One attendant is usually allowed on the ward, with limited visiting in intensive care. Plan who will take turns, as the stay can be long. The attendant will also learn how to help with turning, walking and the brace before you go home.
Is this operation covered by Aarogyasri or insurance?
Cancer surgery is often covered when it is part of an approved plan. Aarogyasri, CGHS, ECHS, EHS and most cashless insurers are accepted. Implants and a long stay can add to the bill, so ask for a written estimate and call the helpline to check your own cover.
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Sources
- National Cancer Institute — Chordoma
- Cancer Research UK — Bone cancer
- American Cancer Society — Bone cancer
- NHS — Bone cancer
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
Spinal Stabilisation With Rods and ScrewsHow the spine is rebuilt after the bone is removedRehabilitation After Spinal Tumour SurgeryThe long recovery that follows a large spine operationThe Pathology Report After SurgeryWhat the margin on your report meansChoosing a Surgeon and a CentreWhat to ask a team about a rare, complex operation
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