Kidney Cancer

The kidneys filter blood and make urine. Renal cell carcinoma starts in the filtering tubules. Clear cell is the most common subtype. Papillary, chromophobe, and several rarer subtypes behave differently and can need a different drug discussion. A cancer that starts in the lining of the urinary tract, called urothelial carcinoma, can involve the kidney area but is treated more like bladder cancer. The pathology name decides which page of the textbook applies. A scan that says kidney mass does not.

Wilms tumour is a childhood kidney cancer and is not what this page describes. Cancer that has spread to the kidney from the lung, bowel, or elsewhere is also different. Treatment follows the cancer that started first. Bringing the biopsy report avoids that mix-up.

Many kidney cancers cause no symptom until they are seen on an ultrasound or CT done for pain, a urinary infection, or an unrelated check. When symptoms occur they can include blood in the urine, a dull ache in the side, a lump, tiredness, or weight loss. Blood in the urine always needs an explanation. Stones and infection are common causes. They do not close the question until the urinary tract has been properly assessed.

Smoking, excess body weight, high blood pressure, long-term kidney disease, and some inherited conditions such as von Hippel-Lindau disease raise risk. Most people with a kidney mass have none of the inherited conditions. Family history of early kidney cancer is still worth mentioning, because it can change whether genetic advice is useful.

CT or MRI defines the mass, whether it stays inside the kidney, and whether it has reached the vein, nodes, or distant organs such as lung or bone. Blood tests check kidney function on both sides, blood count, and calcium. A chest image looks for spread. A biopsy is done in many, but not all, situations. When surgery is clearly the next step for a typical mass, a urologist may remove it without a prior biopsy. Before medicines, a biopsy is usually needed so the subtype is known.

Stage and the pace of growth matter as much as the name. A small tumour may be observed, treated with ablation, or removed as a partial nephrectomy that saves kidney tissue. A larger tumour may need the whole kidney removed. Advanced disease is described by how many organs are involved and how unwell the cancer is making the person. Those details decide between observation, local treatment, and drug therapy.

Surgery is the main curative treatment for cancer confined to the kidney. A urologist performs it. Medical oncology does not replace that opinion. After the kidney is removed, most people are observed. Extra drug treatment after surgery is discussed only in selected higher-risk cases, and the benefit has to be weighed against side effects. It is not routine for every person.

For cancer that has spread, immunotherapy and targeted therapy are the medicines most often discussed. Immunotherapy uses checkpoint inhibitors, sometimes as a pair and sometimes with a targeted drug. Targeted tablets interfere with blood-vessel signals the tumour uses, or with other pathways in selected subtypes. The choice depends on how quickly the disease is changing, other illnesses, prior treatment, and the subtype. Some people with very slow, low-volume spread are watched for a time. Starting a drug on the day of diagnosis is not always the safest or the most useful step.

Radiation can treat a painful bone spot or selected sites of spread. It does not usually replace surgery for the primary tumour. Procedures to remove a single area of spread are considered in carefully chosen people. Traditional chemotherapy has a limited role and is not the standard first treatment for clear cell renal cell carcinoma. If someone has been told they need chemotherapy, it is worth confirming the exact pathology, because a different urinary cancer may have been meant.

Immunotherapy can cause inflammation of the bowel, liver, lung, skin, or hormone glands. Diarrhoea, a new cough, severe fatigue, or headache should be reported early. Steroids are sometimes needed. Do not start them on your own and do not stop the cancer drug without advice. Targeted tablets can raise blood pressure, cause diarrhoea, rash, hand-foot soreness, or affect the thyroid and liver. Blood pressure and blood tests are part of safe prescribing, including when you feel well.

One kidney, or two kidneys that already work less well, changes drug doses and the safety of scans that use contrast. Bring previous kidney blood tests. Pain medicines that harm kidney function should be checked with the team. Fatigue and appetite loss are treated directly. Palliative care can help with symptoms at any stage and does not mean cancer treatment has been withdrawn.

After surgery, scans are repeated for several years because kidney cancer can return late. The interval depends on the stage. A new cough, bone pain, or blood in the urine between scans should be reported. If drug treatment is underway, scans judge whether the cancer is shrinking, stable, or growing. A small change in size is interpreted in context. It does not automatically mean the drug must stop or must continue.

If the first drug stops working, another immunotherapy or targeted approach may be discussed. The order depends on what has already been used and how the person tolerated it. There is no single sequence that fits every kidney cancer. Ask what the goal of the next treatment is: a chance of longer control, relief of a symptom, or both.

Bring the CT or MRI, chest imaging, kidney blood tests, and the pathology if a biopsy or an operation has already been done. Note whether you have one kidney, high blood pressure, or an autoimmune disease, because those facts change both surgery and drug therapy. Write down any blood in the urine, bone pain, or cough that has appeared since the last scan. If another hospital suggested a drug, bring the name rather than a description of the tablet’s colour.

Ask whether the mass needs removal, observation, or medicines, and ask why. Ask what the drug is expected to do, how blood pressure and immune side effects will be watched, and what a growing scan would change. Ask about work and travel around infusion dates. A medical oncologist coordinates with the urologist. Neither opinion replaces the other. You should leave knowing who does the next step and how soon it needs to happen.

A visit about kidney cancer is used to read the records you already have, explain them in plain language, and outline options that may apply. Bring the biopsy or pathology report, scan CDs or reports, blood tests, and a list of treatment already given, including dates and drug names if you have them. A family member can come with you. The visit is not an emergency assessment, and it does not confirm a plan until the records have been reviewed.

Dr. Nishith Vaddeboina is a medical oncologist. Appointments published on this website are at American Oncology Institute, Nallagandla, Hyderabad. The biography also lists consultant work at Renova Century Hospitals. Confirm the hospital when you book. Plans are discussed against recognised guidance, including NCCN, ESMO, and ASCO, and then adjusted to the person in the room. Nothing on this page replaces that conversation.

Blood in the urine, persistent side pain, or a mass reported on a scan should be reviewed. During treatment, fever, severe diarrhoea, sudden breathlessness, chest pain, or a severe headache need urgent advice. This page cannot say whether a kidney cyst is cancer.