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One Kidney or a Family Link? How Kidney Cancer Care Changes

Last updated: 16-Oct-2026

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Dr Swati Shah, kidney cancer surgeon, Ahmedabad

Dr Swati Shah
MS, DrNB (Surgical Oncology)
Kidney Cancer Surgeon
Apollo Hospital, Bhat, Gandhinagar · Gota OPD, Ahmedabad · 18 years of experience
★★★★★ 4.99 from 85 Google reviews (Gota clinic) · 5.0 from 28 (Apollo, Bhat)

IN SHORT

Most kidney cancers follow a standard plan. A single kidney, tumours on both sides, weak kidneys, a family syndrome or spread can change it.

In every special situation, the aim is to keep as much healthy kidney as the cancer allows. Lost kidney function does not come back.

These cases are discussed by a team before a date is fixed. Kidney, heart, blood vessel and gene specialists may all have a say.

This page is one part of a larger guide. For how kidney cancer is treated, when the kidney can be saved and how the operation is planned, start with our kidney cancer surgery guide.

The situations that change the usual plan

For most people with kidney cancer, the plan follows the size and stage of the tumour. Some people need a different route. Each of the situations below is discussed at a team meeting before treatment.

Special situations and what changes
SituationWhat changes
Only one working kidney.Saving kidney tissue comes first. Partial removal, or ablation in some cases.
Tumours in both kidneys, or several in one.Each tumour is planned on its own. A family syndrome is looked for.
Kidneys that already work poorly.A kidney physician joins before surgery. Partial removal is strongly preferred.
A family link to kidney cancer.Genetic counselling and testing. Relatives may be checked too.
An older or unwell person with a small tumour.Watching with scans, or ablation, may replace surgery.
A tumour clot high in the main body vein.Heart and blood vessel surgeons plan the operation with us.
Spread found at diagnosis or years later.Medicines lead. Surgery helps selected people.

Cancer in your only kidney, or in both kidneys

With one kidney, every part of it counts. So the tumour is removed and the rest of the kidney is kept, wherever that is safe. This is called partial nephrectomy.

When surgery would cost too much function, ablation is an option. It destroys the tumour with heat or freezing, through a needle. A biopsy is done first, as a separate step. Ablation is avoided for tumours larger than 3 to 4 cm, or close to the kidney’s root, when other choices exist.

Tumours in both kidneys, or several tumours in one kidney, need a plan for each one. They also raise the question of an inherited cause.

With a single kidney, common anti-inflammatory painkillers are avoided around surgery. They are a frequent cause of a kidney test rising when it need not.

After surgery on a single kidney, passing very little or no urine is an emergency. So is a sharp rise in the creatinine test. A Doppler scan and a CT are done at once, because the kidney’s blood vessels may be blocked.

When the kidneys already work poorly

One creatinine test is not a full check of the kidneys. Before planning, the team measures creatinine, eGFR and protein in the urine. Where the loss of kidney tissue is a real question, a split-function scan shows how much work each kidney does.

If kidney function is already low, a kidney physician sees you before surgery. Keeping part of the kidney is then strongly preferred.

Removing a whole kidney is a permanent loss of kidney reserve. The kidney that remains needs checking and protecting for the rest of your life.

When kidney cancer runs in the family

Some kidney cancers come from a gene change passed down in families. Doctors know these as VHL, HLRCC, BHD, hereditary papillary kidney cancer and SDH-deficient kidney cancer. Recognising them changes the plan for you and for your relatives.

When a genetics referral is advised
PointerWhy it matters
Kidney cancer found before the age of 46.An early age points to an inherited cause.
Tumours in both kidneys, or several in one kidney.Inherited types often make more than one tumour.
A parent, brother, sister or child with kidney cancer.Close relatives may share the gene change.
Other features of a known syndrome.Some syndromes also affect other organs.

When an inherited syndrome causes several tumours, keeping kidney tissue over many years becomes the main goal. Ablation is one of the options used for this.

An older or unwell person with a small tumour

For a tumour of 4 cm or less, surgery is not the only answer for someone frail or seriously unwell. A biopsy can help before such a person is committed to an operation.

  1. Active surveillance. A CT or MRI is repeated at 3 to 6 months, then every 6 months, then yearly if stable.
  2. Treatment if it changes. Treatment starts if the tumour grows more than 5 mm a year, crosses 4 cm, or you prefer to act.
  3. Ablation. For those unfit for surgery, after a separate biopsy.

A tumour clot high in the main vein

Kidney cancer can grow into the kidney vein as a clot of tumour. It may extend up the main body vein, the IVC. The top of the clot is measured on MRI or CT before surgery.

When the clot reaches behind the liver or up to the heart, heart and blood vessel surgeons join the plan. Blood salvage and a heart-lung machine are arranged in advance. This is never an unplanned operation. Leg swelling, chest pain or sudden breathlessness with a known clot needs the same day.

When cancer is found in other organs, even years later

Kidney cancer can spread to bone, lungs, liver, brain, thyroid or pancreas. Sometimes this appears many years after the first treatment. That is why follow-up scans continue.

  1. Medicines are the main treatment for spread disease. A risk group worked out from simple tests guides the choice.
  2. Removing the kidney is no longer routine when the cancer has spread. It is offered to fit people with few deposits and a lower risk group, or when the kidney bleeds or hurts.
  3. One or a few deposits, especially in the lung, may be removed in a fit person. This can keep some people free of disease for a long time.
  4. For some people, the kidney is removed later, after a good response to medicine.
  5. Bone deposits are treated with bone-strengthening medicine and radiotherapy for pain. A weak bone is fixed before it breaks.
  6. Support from the palliative care team starts when spread is found, alongside treatment.

Signs that need the same day

  1. Heavy blood in the urine with clots, or trouble passing urine.
  2. Sudden severe side pain with weakness. This can be bleeding around the kidney. The bleeding vessel is first blocked by a radiologist.
  3. New back pain in someone with kidney cancer. The spine is scanned before you move about, because a weak bone can break.
  4. Leg swelling, chest pain or breathlessness with a known vein clot.

Frequently asked questions

I have only one kidney. Can the tumour still be treated?

Often, yes. Partial removal or ablation aims to keep your kidney working. The choice is made after scans and kidney function tests.

Should my family be tested?

A genetics referral is advised if you were diagnosed before 46, have tumours in both kidneys, or a close relative had kidney cancer.

I am elderly and the tumour is small. Must I have surgery?

Not always. Watching with regular scans, or ablation, are accepted choices for small tumours in frail people.

Can kidney cancer come back after many years?

Yes. It can appear in another organ years later. Follow-up scans look for it, and a few deposits can sometimes be removed.

Why would a heart surgeon be involved?

When the tumour clot in the vein reaches behind the liver or the heart, the operation is planned with heart and vessel surgeons.

Related pages

How the operation is chosen is on the partial or whole kidney removal page. What a vein clot and the risk groups mean is on the kidney cancer stages page. For questions, call +91-63590-11009.

Shah’s Gastro, Cancer & Robotic Surgery Centre

Dr Swati Shah — MS, DrNB (Surgical Oncology) · Kidney Cancer Surgeon

Consultation: Gota OPD, Gota, Ahmedabad. Surgery: Apollo Hospital, Bhat, Gandhinagar.

Gota OPD — Gota, Ahmedabad, Gujarat

Apollo Hospital, Bhat, Gandhinagar — Apollo Hospital International Limited, Plot No. 1 A, GIDC Bhat Industrial Estate, Bhat, Gandhinagar, Gujarat

Call: +91-63590-11009 · WhatsApp: +91-63590-11009

Only one kidney, tumours on both sides, or kidney cancer in the family? Please bring the CT report and kidney function tests to the visit. The plan is decided at the consultation, after examination. Call +91-63590-11009 Send your reports before the visit

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