Kidney Cancer Treatment in Singapore

Kidney cancer occurs when abnormal cells in one or both kidneys grow uncontrollably, forming a tumour. The kidneys are two bean-shaped organs located on either side of the spine that filter waste products from the blood and produce urine. Most kidney cancers start in the lining of tiny tubes within the kidney, called renal tubules. When detected early, kidney cancer can often be treated successfully, but advanced cases may spread beyond the kidney to nearby tissues or distant parts of the body.

Dr. Lie Kwok Ying

Medical Council Certified Urological Specialist

BA MBBChir (Cantab)|MRCS (Edin)|FRCS (Urol)(Glasg)|FAMS

Symptoms Causes Diagnosis Treatment Prevention FAQ

Symptoms of Kidney Cancer

Kidney cancer may not cause noticeable symptoms in its early stages, but as the tumour grows, various signs may develop that warrant medical attention.

Blood in urine: Urine may appear pink, red, or dark brown due to the presence of blood cells. This symptom, known as haematuria, occurs in many cases of kidney cancer.
Pain or pressure in the side or back: A persistent ache or discomfort in the flank area that does not go away with rest may indicate a growing tumour. The pain is usually constant and localised to one side.
Lump or mass in the abdomen: Some individuals may feel a firm mass in the abdomen or flank region. This may represent the tumour itself and become more noticeable as it grows.
Unexplained weight loss: Losing weight without a clear reason may occur as cancer cells use the body’s energy resources. This often accompanies other systemic symptoms.
Fatigue: Persistent tiredness that does not improve with rest may result from anaemia caused by kidney dysfunction or the cancer’s effect on metabolism.
Fever without infection: Recurring fevers without a known cause may be due to the immune system’s response to the cancer. These fevers tend to come and go rather than be continuous.
Swelling in ankles and legs: Oedema in the lower extremities can occur when kidney function is impaired, leading to fluid retention.

Causes and Risk Factors of Kidney Cancer

Several factors may increase the likelihood of developing kidney cancer. Identifying these risks can help with early detection and preventive measures.

Age

The risk increases with age, with most cases diagnosed in people over 50. The cumulative effect of genetic damage over time may contribute to cancer development.

Smoking

Chemicals in tobacco smoke can damage kidney cells as they are filtered through the kidneys, increasing the risk of cancer.

Obesity

Excess body weight affects hormone levels, leading to increased production of growth factors that may encourage tumour development.

High blood pressure

Hypertension can damage blood vessels in the kidneys, creating cellular stress that may contribute to cancer formation.

Family history

Having close relatives with kidney cancer may increase risk. Certain inherited syndromes, such as von Hippel-Lindau disease and hereditary papillary renal cell carcinoma, are linked to higher kidney cancer rates.

Workplace exposures

Regular contact with substances such as cadmium, asbestos, and some organic solvents may increase risk. These chemicals can cause cellular damage when processed by the kidneys.

Chronic kidney disease

Long-term kidney problems, particularly those requiring dialysis, are associated with a higher risk. Persistent inflammation and cellular repair processes may increase the likelihood of DNA mutations.

Benefits of High-Powered Laser Lithotripsy

High-powered laser lithotripsy offers several advantages over traditional stone removal methods.

Greater Precision and Efficiency

High-powered lasers optimise energy delivery, allowing faster and more efficient fragmentation of stones. The finer laser pulses help minimise heat build-up, reducing the risk of tissue damage.
Reduced Stone Movement (Retropulsion)

Unlike traditional lasers, high-powered laser technology prevents stones from moving away from the laser pulse, allowing for more controlled and effective fragmentation.
Shorter Procedure Times

The improved fragmentation efficiency of high-powered lasers reduces the time needed to break stones, leading to quicker procedures and less time under anaesthesia.
Smaller Fragment Size

Specialised laser modulation produces finer stone particles that pass more easily, often eliminating the need for basket extraction and simplifying the overall procedure.
Effective for All Stone Types

High-powered lasers efficiently treat stones of all compositions and densities, including hard stones that may not respond well to traditional laser treatments.
Reduced Radiation Exposure

The improved efficiency of high-powered lasers often lowers fluoroscopy time, reducing overall radiation exposure for patients requiring multiple stone treatments.

Kidney Cancer Diagnostic Methods

Physical examination and medical history: The diagnostic process starts with a review of symptoms, medical history, and family history of cancer. A physical exam may include checking for lumps, swelling, or tenderness in the abdominal or flank area, as well as assessing overall health.
Blood and urine tests: Blood tests measure kidney function markers such as creatinine and blood urea nitrogen, while complete blood counts may reveal anaemia. Urinalysis can detect blood in the urine and other abnormalities not visible to the naked eye.
Imaging studies: Ultrasound provides an initial assessment of kidney masses without radiation. CT scans offer detailed cross-sectional images to evaluate tumour size, location, and potential spread. MRI may be used for more precise soft tissue evaluation or when contrast dye is not an option.
Biopsy: A small tissue sample is taken from the suspicious area for laboratory examination. A pathologist analyses the cells to confirm the diagnosis and determine cancer type and grade. In some cases, a biopsy may not be needed if imaging strongly suggests cancer and surgery is planned.

Kidney Cancer Treatment Options

The management of kidney cancer depends on factors such as tumour size, stage, and overall health. In many cases, surgical or minimally invasive approaches are the primary treatment methods.

Non-Surgical Treatment

Active Surveillance: For small, slow-growing kidney tumours, especially in older adults or individuals with other significant health conditions, active surveillance may be recommended. This involves regular imaging studies to monitor tumour growth, with treatment initiated only if the cancer shows signs of progression.

Surgical Treatment

Partial Nephrectomy (Kidney-Sparing Surgery): This procedure removes only the tumour while preserving as much healthy kidney tissue as possible. It is typically recommended for smaller tumours or in cases where maintaining kidney function is a priority, such as for patients with pre-existing kidney disease or those with cancer in both kidneys.
Radical Nephrectomy: This surgery involves removing the entire affected kidney. In some cases, surrounding structures, such as the adrenal gland or nearby lymph nodes, may also be removed if the tumour is large or has spread beyond the kidney. This approach is often used when the cancer is more aggressive or if a partial nephrectomy is not feasible.
Minimally Invasive Surgery: Laparoscopic techniques can be used to perform either a partial or radical nephrectomy with smaller incisions. These approaches result in reduced post-operative pain, shorter hospital stays, and quicker recovery times compared to traditional open surgery.

Ablation Therapies

Radiofrequency Ablation (RFA): This procedure uses high-frequency electrical currents to generate heat, which destroys cancer cells. A thin, needle-like probe is inserted directly into the tumour using image guidance, such as ultrasound or CT scans. The heat from the probe causes the cancer cells to break down while minimising damage to surrounding healthy tissue.
Cryoablation: This technique uses extremely cold temperatures to freeze and destroy tumour cells. A special probe is inserted into the tumour, releasing liquid nitrogen or argon gas to form ice crystals within the cancerous tissue. The freezing process disrupts cell function and leads to tumour destruction. Cryoablation is particularly useful for small tumours and can sometimes be repeated if necessary.

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Prevention and Management

While not all kidney cancers can be prevented, certain lifestyle changes can reduce risk and support treatment. Maintaining a healthy weight, staying active, and eating a balanced diet help lower cancer risk. Quitting smoking significantly reduces risk, with benefits starting soon after cessation. Managing conditions like hypertension and diabetes helps preserve kidney function. For those diagnosed, a multidisciplinary care team ensures comprehensive treatment. Regular follow-ups by a urology doctor in singapore may aid in early detection of recurrence, while healthy lifestyle choices support overall well-being. Staying informed and actively participating in treatment decisions can improve outcomes.

Frequently Asked Questions

Can kidney cancer affect both kidneys?

Yes, cancer can develop in both kidneys, especially in hereditary conditions like von Hippel-Lindau disease. Treatment focuses on preserving kidney function, often using staged surgeries or ablation techniques.

What follow-up care is needed after treatment?

Regular monitoring includes physical exams, blood tests, and imaging, with more frequent check-ups in the first 1–2 years. Follow-ups help detect recurrence early and manage treatment effects, especially for those who have had a partial or complete nephrectomy.

Can kidney cancer return after treatment?

Recurrence is possible and depends on factors such as tumour size, stage, and treatment approach. Regular follow-ups with imaging and lab tests help monitor for any signs of cancer returning, allowing for early intervention if needed.

Dr. Lie Kwok Ying

Senior Consultant Urologist in Singapore

BA MB BChir (Cantab)|MRCS (Edin)|MMEd (Surg)|FRCS (Glasg)(Urol)|FAMS

Dr. Lie Kwok Ying is a Senior Consultant Urologist and pioneered the use of HoLEP (Holmium Enucleation of Prostate) for benign prostatic hyperplasia (BPH) in Singapore.

He graduated from Queens’ College in Cambridge University with triple First Class Honours and subsequently qualified in 2001 with degrees in Medicine and Surgery.

Clinical Interests in Urology