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kidney-cancer

Kidney Cancer

Renal cell carcinoma (RCC), another name for kidney cancer, is a kind of cancer that starts in the tissues of the kidneys, which are bean-shaped organs in the back of the abdomen that aid in blood waste removal, blood pressure regulation, and fluid balance.

One of the top ten most prevalent cancers in adults is kidney cancer. More cases are being identified early, frequently before symptoms even manifest, as a result of improvements in imaging and treatment. Awareness is still crucial because some kidney cancers can still be aggressive, particularly if they are not discovered in time.

Types of Kidney Cancer

Renal cell carcinomas, which start in the lining of the kidney's tiny tubes, account for the majority of kidney cancers. Among the subtypes are:

  • Clear cell RCC (most common)
  • Papillary RCC
  • Chromophobe RCC
  • Collecting duct carcinoma and medullary carcinoma (rare and aggressive)

Other less frequent varieties include Wilms tumor, which primarily affects children, and transitional cell carcinoma, which affects the renal pelvis.

What Causes Kidney Cancer?

The exact cause is often unclear, but several risk factors have been identified:

  • Smoking – increases risk by nearly double
  • Obesity – associated with hormonal and metabolic changes
  • High blood pressure (hypertension) – even when controlled
  • Family history – especially of hereditary conditions like von Hippel-Lindau (VHL) disease
  • Chronic kidney disease or long-term dialysis
  • Occupational exposures – such as asbestos, cadmium, or certain solvents
  • Genetic mutations – either inherited or acquired over time

It's crucial to remember that kidney cancer can strike people who have no known risk factors.

Symptoms and Signs

Kidney cancer frequently shows no symptoms in its early stages. During imaging for other problems, many cases are unintentionally found. But as the tumor spreads, symptoms could include:

  • Blood in the urine (hematuria) – may appear pink, red, or cola-coloured
  • Flank pain – on one side of the lower back
  • A mass or lump in the abdomen or side
  • Unexplained weight loss
  • Persistent fatigue
  • Fever not caused by infection
  • Loss of appetite

Coughing, bone pain, or leg swelling are signs of advanced disease that has spread to the liver, lungs, or bones.

Diagnosis and Evaluation

A number of tests are performed to confirm the diagnosis and determine the severity of kidney cancer if it is suspected:

  • Ultrasound – often the first imaging test used
  • CT scan or MRI – provides detailed images of the kidney and surrounding structures, and helps in staging
  • Urinalysis and blood tests – to check kidney function and detect any abnormalities
  • Biopsy – occasionally performed if the diagnosis is uncertain or when considering non-surgical treatment

Following confirmation, the cancer is categorized into stages I through IV according to the size of the tumor, local spread, and metastasis.

Treatment Options

The stage, tumor size, general health, and patient preference all affect how kidney cancer is treated. In order to preserve as much kidney function as possible, the tumor must be removed or destroyed.

1. Surgery

For the majority of localized kidney cancers, surgery is the primary treatment option.

  • Partial nephrectomy – only the tumor and a tiny amount of surrounding tissue are removed. When feasible, this is the best option to maintain kidney function.
  • Radical nephrectomy – total kidney removal, occasionally accompanied by surrounding tissues or lymph nodes if necessary.

Active surveillance, also known as watchful waiting, may be suitable for certain patients who have small tumors or several medical conditions.

2. Ablative Therapies

Patients who are unable to have surgery can use less invasive methods such as cryoablation or radiofrequency ablation (RFA), which use heat or cold to destroy the tumor, respectively.

3. Targeted Therapy

Targeted medications that block particular cancer growth pathways have greatly improved the prognosis for advanced or metastatic kidney cancer. These consist of:

  • Tyrosine kinase inhibitors (TKIs) like sunitinib, axitinib, or cabozantinib
  • VEGF inhibitors, which block the tumour’s blood supply

4. Immunotherapy

The immune system can identify and combat cancer cells with the aid of checkpoint inhibitors like nivolumab, pembrolizumab, or combination treatments (e.g., ipilimumab + nivolumab). In many advanced cases, these are now regarded as a first choice.

5. Radiation and Chemotherapy

Conventional chemotherapy is often ineffective against kidney cancer. Instead of being used as a curative treatment, radiation is primarily used to control symptoms or relieve pain in metastatic sites (palliative care).

Monitoring and Follow-Up

Long-term follow-up is necessary for kidney cancer patients undergoing treatment in order to track kidney function and identify any spread or recurrence. Typically, this consists of:

  • Periodic imaging scans (CT or ultrasound)
  • Blood tests to assess kidney performance
  • Urine tests for signs of blood or protein

The follow-up plan is customized based on the tumor stage, treatment received, and recurrence risk.

Can Kidney Cancer Be Prevented?

Certain lifestyle changes can lower risk, even though not all kidney cancers can be prevented:

  • Stop smoking
  • Maintain a healthy weight
  • Control blood pressure
  • Limit exposure to toxic chemicals
  • Stay well-hydratedand follow a kidney-friendly diet if you have chronic kidney disease

For high-risk individuals, early detection through routine physicals and imaging may also help detect tumors at an earlier, more treatable stage.

When to Seek Specialist Care

Managing kidney cancer can be challenging, particularly when it has spread or become advanced. Urologists, oncologists, radiologists, and pathologists must all work together in a multidisciplinary manner.

Kidney cancers are actively treated systemically by medical oncologist Dr. Amit Badola. Immunotherapy and targeted agents, which have transformed the treatment of advanced renal cell carcinoma, are among his areas of expertise. To guarantee that each patient receives a customized, evidence-based treatment plan, Dr. Badola collaborates with a team.