Medical Oncologist
CION Cancer Clinics
Kidney-sparing surgery for upper tract tumours | CION Cancer Clinics
Yes, some upper tract tumours can be treated without removing the kidney. A small, low-grade, single tumour can be burned away with a laser through a telescope, and a tumour low in the ureter can be cut out with the kidney kept. The price is closer follow-up and a higher chance of the tumour coming back. Whether it suits you depends on grade, size, position and how well both kidneys work. 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
- Can the kidney be saved with an upper tract tumour?
- What are the kidney-sparing options?
- What points towards keeping the kidney, and what points away?
- What follows kidney-sparing treatment?
- Four things families tell us, and what is actually true
- Which words will you see, in plain language?
- Who does this not suit, and what can this page not tell you?
- Common questions about kidney-sparing surgery
The short answer
Can the kidney be saved with an upper tract tumour?
Often, yes, if the tumour is small, low grade and on its own. Then it can be burned away with a laser through a telescope, or the affected piece of ureter can be cut out and the tube rejoined. For high-grade or larger tumours, removing the kidney and whole ureter remains the usual advice, and the kidney is kept only when losing it would do more harm than the cancer risk of keeping it.
Two very different reasons to keep a kidney
The first is that the tumour is low risk, so keeping the kidney adds little danger. The second is that you cannot afford to lose it: you have only one kidney, tumours on both sides, or kidney function already too weak to manage on one. In that second case the team accepts more cancer risk to keep you off dialysis, and they will say so plainly.
What the team weighs
The grade on the biopsy, the urine cell test, the size of the tumour, whether there is one or several, whether the scan shows it growing into the wall or blocking the kidney, and where it sits. All of these need to line up before a tumour is called low risk.
This page describes the options. It cannot tell you which one suits you. That is a decision for your treating team.The options
What are the kidney-sparing options?
Which one fits depends mostly on where the tumour is.
Laser through a telescope
A fine telescope goes up through the urethra, bladder and ureter to the tumour, and a laser fibre burns it away. No cuts. Suits small, low-grade tumours that the scope can reach.
Usually followed by
- A stent for a short time
- A second look a few months later
Through the skin into the kidney
For a larger low-grade tumour inside the kidney, a track is made through the back directly into the collecting system, and the tumour is removed through it. Used mainly where a telescope cannot reach.
Cutting out a segment of ureter
The piece of ureter carrying the tumour is removed with a margin on each side, and the two ends are joined. Works for a single tumour in the upper or middle ureter with enough healthy tube on either side.
Removing the lower ureter and rejoining it to the bladder
For a tumour near the bladder, the lowest part of the ureter comes out with a cuff of bladder, and the shortened ureter is stitched into the bladder higher up. The kidney and the rest of the ureter stay.
Ask your centre which of these they do, and how often.Not sure whether this applies to you?
Ask an oncologistSide by side
What points towards keeping the kidney, and what points away?
Points towards sparing the kidney
Points towards removing kidney and ureter
Low grade on the biopsy and a clear urine cell test
High grade on the biopsy, or cancer cells in the urine test
One small tumour
Several tumours, or one large one
Tumour sits on the lining only, with no swelling of the kidney on the scan
Tumour growing into the wall, or a kidney swollen with urine above it
Low in the ureter, easy to reach and easy to check again
Deep inside the kidney where a laser cannot reach every part
One kidney, tumours on both sides, or weak kidney function
Two healthy kidneys, so losing one is safe
The pathway
What follows kidney-sparing treatment?
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An early second look
A few months after laser treatment the telescope is passed up again to check that nothing was missed and nothing has regrown. Small regrowths are often treated at the same sitting.
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Bladder checks
The bladder shares the same lining, so it is checked with a telescope at intervals as well. This continues for years.
-
Scans and urine tests
A CT urogram at intervals looks at the kidney and ureter from the outside, and urine cell tests look for high-grade cells that a scope might not see.
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Repeat treatment if needed
Low-grade tumours tend to come back as more low-grade tumours. Many people have the laser more than once over the years while keeping the kidney.
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Changing course
If a tumour returns as high grade, grows quickly, or the kidney becomes blocked, the team will usually recommend moving to removal of the kidney and ureter.
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Commonly believed
Four things families tell us, and what is actually true
"Keeping the kidney is always the safer choice."
Safer for the kidney, not always safer against the cancer. For a high-grade tumour, keeping the kidney means keeping the lining the cancer grows in, and the chance of it returning and spreading is higher. The team weighs both risks, not one.
"Once the laser removes it, it is gone for good."
The tumour that was treated is gone. The lining that produced it is still there, and new tumours in the same lining are common. That is why kidney-sparing treatment always comes with lifelong checks and, often, repeat treatments.
"Kidney-sparing is only offered to people too weak for the big operation."
It is offered on the basis of the tumour as much as the patient. A fit person with a small low-grade tumour may be offered it first. A frail person with a high-grade tumour may still be advised to have the kidney removed.
"If we lose the kidney, life will be restricted."
Most people with one healthy kidney live an ordinary life: work, travel, normal food and drink. The things that change are yearly kidney checks and some care with painkillers and dehydration.
On your report
Which words will you see, in plain language?
- Low risk and high risk
- Labels the team gives the tumour after weighing grade, size, number and the scan. Low risk is what makes kidney-sparing a fair option.
- Ureteroscopic
- Done with a fine telescope passed up the ureter. No cuts on the outside.
- Percutaneous
- Through the skin. A track is made from the back directly into the kidney.
- Segmental ureterectomy
- Removing one section of the ureter and joining the ends.
- Reimplantation
- Stitching the ureter into the bladder at a new spot after its lower end has been removed.
- Surveillance
- The planned programme of telescope checks, scans and urine tests that follows any kidney-sparing treatment.
Being straight with you
Who does this not suit, and what can this page not tell you?
Kidney-sparing treatment does not suit a high-grade tumour in someone with two healthy kidneys. It does not suit several tumours, a tumour that has grown into the wall, or one the telescope cannot reach in full. And it does not suit anyone who cannot come back for the checks, because without them a returning tumour is found late.
The honest trade-off
Keeping the kidney keeps your kidney function, which matters more the older you are and the weaker your other kidney is. It also keeps the lining that grew the tumour, so the chance of a new tumour is higher and the follow-up is heavier. Neither choice is free of risk.
What to ask
Ask what grade and size the tumour is, and whether the team calls it low risk. Ask how well each kidney works on its own. Ask what the follow-up would involve, how often, and for how long. Ask what would make them change their advice later.
If the answer is that the kidney should come out, ask why. A good reason will be about the tumour.Questions we are asked
Common questions about kidney-sparing surgery
Will the cancer come back if the kidney is kept?
A new tumour in the same lining is common after kidney-sparing treatment, more so than after removing the kidney and ureter. Most of these are low grade and are treated again through the telescope. The checks exist to find them while they are small.
How often will I need to be checked?
Closely at first, with a telescope look within a few months, then at longer intervals if all stays clear. Bladder checks, scans and urine tests run alongside. The schedule is set by your team and eases over the years, but it does not stop.
Can we try kidney-sparing first and remove the kidney later if needed?
For a low-risk tumour, yes, and that is a common plan. For a high-grade tumour the delay itself carries risk, because the tumour may grow through the thin ureter wall in the meantime. Ask your team whether waiting is safe in your case.
I have only one kidney and the tumour is high grade. What then?
This is the hardest situation, and there is no single right answer. The team weighs the cancer risk of keeping the kidney against a life on dialysis if it is removed. Some people choose one, some the other, after a frank conversation.
Is the laser treatment done under general anaesthetic?
Usually, yes, or under a spinal anaesthetic that numbs you from the waist down. It is often a day-case or one-night stay. A soft plastic stent is usually left in the ureter for a short time afterwards so the swelling does not block the kidney.
Can a medicine be put into the kidney instead of surgery?
Some centres place a chemotherapy medicine directly into the kidney's collecting system after laser treatment, to lower the chance of regrowth. It is not available everywhere and does not replace the laser. Ask whether your centre offers it.
Does kidney-sparing surgery cost less?
The first procedure is usually smaller and the stay shorter, but the years of checks and any repeat treatments add up. Aarogyasri, CGHS, ECHS, EHS and cashless insurance cover much of this when it is part of an approved plan. Ask the helpline to check your cover.
What if the tumour is inside the kidney, not the ureter?
The telescope can reach most of the kidney's collecting system, but not always every corner. For a small low-grade tumour there, laser treatment is still possible. For a larger one, the team may suggest a track through the skin, or advise removing the kidney.
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Dr. Vinay Mamidala
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Sources
- National Cancer Institute — Transitional Cell Cancer of the Renal Pelvis and Ureter Treatment (PDQ) - Patient Version
- Cancer Research UK — Kidney cancer
- American Cancer Society — Bladder cancer
- NHS — Kidney 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
Ureteroscopy and laser ablationThe telescope-and-laser option, step by stepSegmental ureterectomy and reimplantationCutting out part of the ureter and rejoining itNephroureterectomy: what is removedThe alternative, when the kidney has to goKidney function after nephroureterectomyWhat living with one kidney involvesDeciding on cancer surgeryHow to weigh two options with your team
Talk to us
Wondering whether your kidney can be kept?
Send us the biopsy and scan reports, or call the helpline. A surgical oncologist will tell you what your reports point towards and what to ask your team. One helpline serves every CION centre.