Kidney Cancer Treatment
If you are diagnosed with kidney cancer, your doctor will discuss the best options to treat it. This depends on several factors, including the stage of the cancer and your general health. Your treatment for kidney cancer at MD Anderson will be customized to your particular needs.
Active surveillance
Cancer treatment can be a significant physical burden and risk for older patients and/or those in poor health. These patients may be good candidates for active surveillance, especially if the tumor is small. With this approach, doctors monitor the cancer through blood and urine tests as well as imaging exams. Treatment only begins when and if the cancer advances or if the patient’s overall health improves.
Surgery
Tumors that are confined to the kidney or to the area around the kidney are usually removed with surgery. It’s important for the surgeon to leave as much of the kidney as possible, though in some cases the entire organ will need to be taken out.
At MD Anderson, these surgeries are usually minimally invasive, meaning only a few small incisions are needed. Minimally invasive surgery can be performed with a laparoscope (a thin rod with a camera and surgical tools attached) or with a robot controlled by a surgeon.
Minimally invasive surgery is shown to result in less pain, shorter hospital stays and quicker recovery times than traditional “open” procedures, which require incisions ranging from 4 to 8 inches. Open surgery is usually performed only when a patient is not eligible for minimally invasive surgery because of the specific aspects of his or her cancer.
You can usually live with one kidney, but if both kidneys are removed or not working you will need dialysis (a way to clean the blood with a machine). A kidney transplant may be an option for some patients.
The two main types of surgery for kidney cancer include:
Partial nephrectomy (or kidney-sparing surgery): Only the cancerous portion of the kidney is removed, along with a margin of healthy tissue around it. High quality pre-treatment imaging is used to determine what will be removed, and ultrasound can be used to look for additional tumors during surgery.
Candidates for partial nephrectomy are chosen based on favorable tumor location, health problems that may affect the treatment outcome, the condition of the kidneys and the patient's desire to save the kidney. Partial nephrectomy is best for kidney cancer tumors that are 4 centimeters or less in size, but it can be done for larger tumors when possible.
Radical nephrectomy: In this procedure, the entire kidney along with the surrounding fatty tissue is removed. Sometimes the adrenal gland and nearby lymph nodes are also removed. Radical nephrectomy is typically performed on patients with more advanced cancer.
Energy ablative techniques
Other minimally invasive techniques use either heat or cold to treat tumors in place, without having to remove any of the kidney. These are ideal for smaller kidney tumors in patients considered at high risk for surgery.
Cryoablation freezes the tumor with a long, thin probe inserted into the tumor. Intensive follow-up with X-rays or other imaging procedures is required to ensure that the tumor has been destroyed.
Radiofrequency ablation (RFA) is similar to cryoablation, but heat is used to destroy the tumor instead of cold.
Targeted therapies
While many medications directly kill cancer cells, targeted therapy works by stopping or slowing the growth or spread of cancer.
This happens on a cellular level. Cancer cells need specific molecules (often in the form of proteins) to survive, multiply and spread. Targeted therapies are designed to interfere with, or target, these molecules or the cancer-causing genes that create them. For kidney cancer, these therapies are mainly used for patients whose disease has spread to other organs in the body.
Most targeted therapies for kidney cancer are angiogenesis inhibitors. Angiogenesis is the process of tumors creating their own network of blood vessels, enabling the cancer to thrive and grow. Angiogenesis inhibitors disrupt this process.
Other targeted therapies for kidney cancer interrupt the cancer cell division and multiplication. These drugs are approved for treatment of advanced kidney cancer but are less commonly used.
Immunotherapy
Like targeted therapy, immunotherapy does not directly kill cancer cells. Instead, these drugs work by improving the ability of the patient’s immune system to eliminate cancer.
Most immunotherapies for kidney cancer are known as checkpoint inhibitors. These medications help cancer-fighting immune cells, called T cells, mount a longer-lasting response against the disease.
Cytokines, including interleukin-2, spur the growth of immune system cells to fight cancer. They are used only rarely for patients with advanced kidney cancer.
Chemotherapy
Most traditional chemotherapy is generally ineffective against kidney tumors, so it is currently not used often. Chemotherapy can be used in cases of patients with medullary kidney cancer.
Radiation therapy
Kidney tumors are not very sensitive to standard forms of radiation but healthy kidney cells are. For this reason, standard radiation therapy has a limited role in the treating the primary kidney tumor.
In rare cases, radiation oncologists may use highly focused beams to treat the tumor. These techniques include stereotactic radiosurgery and occasionally proton therapy. Learn more about proton therapy and how it is used to treat kidney cancer.
If a patient’s cancer has spread beyond the kidney, standard radiation may be used to help stop the growth of metastases, relieve pain and minimize other symptoms.
Angiogenesis inhibitors
Angiogenesis is the process of creating new blood vessels. Some cancerous tumors are very efficient at creating new blood vessels, which increases blood supply to the tumor and allows it to grow rapidly.
Researchers developed drugs called angiogenesis inhibitors, or anti-angiogenic therapy, to disrupt the growth process. These drugs search out and bind themselves to VEGF molecules, which prohibits them from activating receptors on endothelial cells inside blood vessels. Other angiogenesis inhibitor drugs work on a different part of the process, by stopping VEGF receptors from sending signals to blood vessel cells.
