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RGCIRC, Niti Bagh
Cryosurgery for Cancer Treatment
Not every cancer treatment involves a scalpel. In selected cases, cancer cells can also be destroyed using extreme cold. Cryosurgery, also called cryotherapy or cryoablation, is a minimally invasive cancer treatment technique that freezes and destroys abnormal or cancerous tissue while aiming to protect nearby healthy structures as much as possible.
Cryosurgery may be considered for selected tumours depending on their type, size, location, stage, accessibility, and the patient’s overall condition. It may be used for certain superficial lesions as well as selected internal tumours, and is often planned with the help of imaging guidance for accurate targeting.
What is Cryosurgery?
Cryosurgery is a minimally invasive cancer treatment technique that uses extreme cold to freeze and destroy abnormal or cancerous tissue. The cold is usually produced by liquid nitrogen or argon gas.
During the procedure, freezing causes ice crystals to form inside and around the cells. This damages the cancer cells, disrupts their structure, and affects the small blood vessels that supply the tumour. As a result, the treated tissue gradually dies.
Cryosurgery is performed using a cryoprobe, a thin needle-like instrument that delivers extreme cold to the target area. For skin lesions, the cold may be applied directly to the surface. For internal tumours, the cryoprobe is inserted through the skin and guided to the tumour using imaging techniques such as ultrasound or, CT scan.
The effectiveness of cryosurgery depends on several factors, including how cold the tissue becomes, how quickly it is frozen, how long the freezing is maintained, and whether more than one freeze-thaw cycle is used.
Cryosurgery may be considered for selected cancer patients depending on the tumour type, size, location, stage, and overall treatment goals.
How Does Cryosurgery Work?
Cryosurgery destroys cancer cells by exposing them to extremely low temperatures. The freezing process damages the tumour in more than one way.
- Ice Crystal Formation
- Cellular Dehydration
- Vascular Disruption
- Possible Immune Response
Researchers are studying whether combining cryoablation with immunotherapy can strengthen this immune response. Early research has explored this approach in cancers such as prostate cancer, melanoma, lung cancer, and metastatic disease. However, this is still an evolving area, and the benefit depends on the cancer type, disease stage, and treatment plan.
What Cancers are Treated with Cryosurgery?
Cryosurgery is not suitable for every cancer or every patient. It may be considered in selected cases depending on the tumour type, size, location, stage, accessibility, and the patient’s overall health and treatment goals.
Cervical Pre-cancerous Lesions
Cryosurgery is commonly used to treat abnormal cervical cell changes that may become cancerous if left untreated. These changes are known as cervical intraepithelial neoplasia, or cervical pre-cancer.
In this procedure, extreme cold is applied to the affected area of the cervix to destroy abnormal surface cells.
Skin Cancer and Pre-cancerous Skin Lesions
Cryosurgery may be used for selected superficial skin cancers and pre-cancerous skin lesions. These may include actinic keratoses, certain basal cell carcinomas, and selected squamous cell carcinomas in situ.
For skin lesions, liquid nitrogen is usually applied directly to the abnormal area. The frozen tissue later forms a scab and heals over time.
Liver Tumours
Cryoablation may be considered for selected liver tumours, including primary liver cancer and liver metastases, especially when the tumour is limited, accessible, and suitable for local ablation.
Lung Tumours
Cryoablation may be used in selected lung tumours, particularly when surgery is not suitable or when local tumour control or symptom relief is needed. Image guidance helps the doctor place the cryoprobe into the target area while trying to protect nearby healthy lung tissue.
Prostate Cancer
Prostate cryoablation, also called prostate cryotherapy, uses cryoprobes to freeze and destroy prostate tumour tissue. It may be considered for selected patients with early-stage prostate cancer or for some patients with recurrence after radiation therapy.
Bone Tumours and Bone Metastases
Cryosurgery may be used in selected bone tumours and painful bone metastases. In some cases, it may be used after tumour curettage to destroy remaining abnormal cells in the bone cavity. In advanced cancer, cryoablation may also help relieve pain from bone metastases.
Kidney Tumours
Cryoablation may be considered for selected small kidney tumours, especially in patients who are not ideal candidates for surgery or where preserving kidney function is important.
How is Cryosurgery Performed?
The steps of cryosurgery depend on the tumour’s location, size, and type. The procedure may be done externally for skin or surface lesions, or internally for tumours located deeper inside the body.
Before the Procedure
Before cryosurgery, the clinical team reviews the patient’s imaging reports, tumour characteristics, medical history, and overall health to confirm whether the procedure is suitable.
Blood tests, including clotting tests, may be advised before an invasive procedure. Patients may also be asked to fast for a few hours if sedation or anaesthesia is planned. The doctor explains the procedure, possible risks, expected recovery, and follow-up plan before taking written consent.
External Cryosurgery for Skin and Surface Lesions
For skin or surface lesions, liquid nitrogen is applied directly to the abnormal tissue using a spray device, probe, or cotton swab. The treated area freezes and then thaws naturally.
In some cases, more than one freeze-thaw cycle may be performed to ensure adequate treatment of the lesion. The procedure usually takes only a few minutes. Anaesthesia may not be needed for very small lesions, though topical or local numbing may be used depending on the site and patient comfort.
Internal Cryosurgery for Deeper Tumours
For internal tumours, such as selected tumours in the liver, lung, kidney, bone, prostate, or soft tissue, one or more cryoprobes are inserted through the skin and guided to the tumour using imaging such as CT, ultrasound, or MRI.
The doctor monitors the freezing zone, often called the ice ball, on imaging to ensure that the tumour is adequately covered while protecting nearby healthy structures as much as possible. Extreme cold is delivered through the cryoprobe using liquid nitrogen or argon gas. Depending on the tumour and treatment plan, one or more freeze-thaw cycles may be performed.
Internal cryosurgery is usually done under sedation, regional anaesthesia, or general anaesthesia, depending on the tumour site, procedure complexity, and patient condition. Some patients may go home the same day, while others may need overnight observation.
After the Procedure
After cryosurgery, patients are monitored for a few hours, especially after internal cryoablation. Mild pain, swelling, bruising, tiredness, or low-grade fever may occur for 24 to 48 hours and usually improves with medicines and rest.
The care team gives instructions about wound care, medicines, activity restrictions, warning signs, and follow-up visits. Follow-up imaging, such as CT or MRI, may be advised at planned intervals to assess the treatment response and check whether the treated tumour tissue has been adequately destroyed.
Benefits of Cryosurgery
Cryosurgery may offer several benefits for appropriately selected patients. These benefits depend on the type of cancer, tumour location, size, stage, and the patient’s overall health.
Minimally Invasive Procedure
Internal cryosurgery usually requires only small skin punctures for inserting the cryoprobes. In many cases, this means smaller wounds, less tissue disruption, and a shorter recovery time compared with open surgery.
Helps Preserve Nearby Healthy Tissue
During image-guided cryosurgery, the doctor can monitor the frozen treatment area, also called the ice ball, in real time. This helps target the tumour while trying to protect nearby healthy tissue, nerves, blood vessels, and other important structures.
May Be Repeated in Selected Cases
Cryoablation may be repeated in selected patients if a tumour recurs in the treated area or if more than one lesion needs treatment over time. The decision depends on the patient’s condition, tumour response, and overall treatment plan.
Option for Patients Who May Not Be Fit for Major Surgery
Cryosurgery may be considered for some patients who are not suitable candidates for conventional surgery because of age, other medical conditions, poor lung function, or the risks of major surgery and general anaesthesia.
Shorter Hospital Stay in Many Cases
Many cryosurgery procedures are performed with a shorter hospital stay than open surgery. Some patients may go home the same day, while others may need overnight observation depending on the tumour site, anaesthesia used, and clinical condition.
Possible Immune Response
Cryoablation may release tumour-related proteins from destroyed cancer cells. Researchers are studying whether this can help stimulate the immune system and whether combining cryoablation with immunotherapy can improve treatment response in selected cancers. This is an evolving area of cancer research and is not guaranteed for every patient.
Possible Side Effects and Complications
Cryosurgery is generally well tolerated in appropriately selected patients, but like any medical procedure, it can have side effects and risks. These vary depending on the tumour location, the size of the treated area, the technique used, and the patient’s overall health. The clinical team explains these risks before the procedure.
Common and Expected Effects
Mild pain, soreness, swelling, bruising, or discomfort at the treated site may occur after cryosurgery. These symptoms are usually temporary and can often be managed with medicines advised by the doctor.
For skin cryosurgery, redness, swelling, blistering, scabbing, or tenderness may occur at the treated area. These changes usually settle as the skin heals.
After internal cryoablation, some patients may experience tiredness, mild fever, or flu-like symptoms for 24 to 48 hours. These symptoms are usually part of the body’s response to the treated tissue and are monitored by the care team.
Site-Specific Risks
The possible risks of cryosurgery depend on the area being treated.
For skin lesions, temporary darkening or lightening of the skin, scarring, delayed healing, or changes in skin texture may occur.
For prostate cryoablation, possible side effects may include urinary symptoms, temporary difficulty passing urine, erectile dysfunction, or irritation of nearby structures. The risk depends on tumour location, treatment extent, and previous treatments.
For liver cryoablation, possible risks include bleeding, infection, injury to nearby bile ducts or blood vessels, or incomplete tumour destruction, especially when the tumour is close to important structures.
For kidney cryoablation, possible risks include bleeding, urine leak, or injury to nearby organs, though these are uncommon when the procedure is carefully planned and image-guided.
For bone or soft tissue cryoablation, pain, swelling, nerve irritation, fracture risk, or injury to nearby blood vessels or nerves may be considered depending on the site.
Recovery After Cryosurgery
Recovery after cryosurgery is usually shorter than recovery after open surgery, but the exact timeline depends on the tumour site, treatment area, anaesthesia used, and the patient’s overall health.
Skin Cryosurgery
After skin cryosurgery, the treated area may become red, swollen, tender, or blistered before forming a scab. Healing usually takes a few weeks, depending on the size and depth of the lesion. Most patients can return to normal daily activities soon after the procedure.
Cervical Cryosurgery
After cervical cryosurgery, watery vaginal discharge is common while the treated tissue heals. Patients may be advised to avoid sexual intercourse, tampons, and douching for two to three weeks, or as recommended by the doctor. Most patients can return to routine activities soon after the procedure.
Liver Cryoablation
Recovery after liver cryoablation depends on the size and number of tumours treated and the patient’s condition. Some patients may go home the same day, while others may need short hospital observation. Mild fatigue, abdominal discomfort, shoulder pain, or flu-like symptoms may occur for a few days. Return to normal activity is usually gradual and should follow the treating team’s advice.
Prostate Cryoablation
After prostate cryoablation, a urinary catheter is usually placed to help drain urine while the treated area heals. The catheter may remain for about one to two weeks, depending on the doctor’s advice. Many patients return to light activities within a short period, but full recovery and return to normal routine may take a few weeks.
Bone and Soft Tissue Cryoablation
Recovery after bone or soft tissue cryoablation depends on the site treated, the size of the lesion, and whether the procedure was done for tumour control, pain relief, or both. Some patients may be discharged the same day or after short observation. Activity restrictions may be advised for one to two weeks, especially when weight-bearing bones, nerves, or large soft tissue areas are involved.
Follow-Up After Cryosurgery
Follow-up is an important part of recovery. The doctor may advise clinical review, wound check, blood tests, or follow-up imaging such as CT, MRI, or ultrasound to assess the treated area and confirm treatment response.
Cryosurgery vs Open Surgery
Compared with open surgery, cryosurgery is usually less invasive. It often involves smaller puncture wounds, shorter hospital stay, less tissue disruption, and faster recovery in selected patients.
However, cryosurgery is not always a replacement for surgery. For many solid tumours, surgical removal with clear margins remains the standard curative treatment when the tumour is operable and the patient is fit for surgery. Cryosurgery may be considered when surgery is not suitable, when a less invasive local treatment is appropriate, or as part of a broader cancer treatment plan.
Choosing the Right Treatment
The best treatment is not decided by the availability of one technique alone. At RGCIRC, treatment planning is based on clinical evaluation, imaging, biopsy findings, tumour biology, patient fitness, and multidisciplinary review. Cryosurgery may be recommended only when the cancer team believes it is appropriate for the specific patient and tumour.
Why Choose RGCIRC for Cryosurgery?
Choosing the right centre for cryosurgery is important because the success of an ablative procedure depends on careful patient selection, accurate imaging guidance, specialist expertise, and proper follow-up. At RGCIRC, cryosurgery is planned as part of a comprehensive cancer care pathway, not as a standalone procedure.
- Pioneer in Interventional Oncology in India
- Multidisciplinary Treatment Planning
- Advanced Imaging Infrastructure
- Comprehensive Cancer Care Under One Roof
- Accredited Standards and Recognised Excellence
- Commitment to Accessible Cancer Care
Book a Consultation at RGCIRC
If you have been advised to consider cryosurgery, or if you want to understand whether cryoablation is suitable for your specific diagnosis, you can consult the Interventional Oncology and surgical oncology teams at RGCIRC.
The team will review your diagnosis, imaging reports, biopsy findings, tumour location, overall health, and treatment goals before recommending whether cryosurgery is appropriate as part of your cancer treatment plan.
To book a consultation at RGCIRC:
Book online: care.rgcirc.org
Call Rohini: +91-11-4702 2222
OPD Hours: Monday to Saturday, 9:00 AM to 5:00 PM
Frequently Asked Questions (FAQs)
What is cryosurgery and how does it work?
Cryosurgery, also called cryoablation, is a minimally invasive treatment that uses extreme cold to freeze and destroy abnormal or cancerous tissue. The cold is usually produced by liquid nitrogen or argon gas and delivered through a cryoprobe.
The freezing process damages cancer cells, forms ice crystals, disrupts cell structures, and affects the small blood vessels supplying the tumour. For skin lesions, the cold may be applied directly to the surface. For internal tumours, the cryoprobe is guided into the tumour using imaging such as CT, ultrasound, or MRI.
Is cryosurgery the same as cryotherapy?
In cancer care, cryosurgery, cryotherapy, and cryoablation are often used to describe the medical use of extreme cold to destroy tumour tissue.
Which cancers can be treated with cryosurgery?
Cryosurgery may be considered for selected skin cancers, pre-cancerous skin lesions, cervical pre-cancerous lesions, liver tumours, lung tumours, kidney tumours, prostate cancer, bone tumours, and selected soft tissue tumours.
It is not suitable for every cancer or every patient. The decision depends on the tumour type, size, location, stage, accessibility, previous treatments, and the patient’s overall health. At RGCIRC, suitability for cryosurgery is assessed through specialist evaluation and multidisciplinary treatment planning.
Is cryosurgery painful?
Most cryosurgery procedures are performed under local anaesthesia, sedation, or general anaesthesia, depending on the site and complexity of the procedure. This helps reduce pain during treatment.
What is the recovery time after cryosurgery?
Recovery depends on the area treated and the type of cryosurgery performed. For skin cryosurgery, many patients return to routine activities soon after the procedure, though the treated area may take a few weeks to heal.
After cervical cryosurgery, patients may be advised to avoid sexual intercourse, tampons, or douching for a few weeks while healing occurs. For internal cryoablation, such as liver, kidney, prostate, bone, or soft tissue procedures, some patients may go home the same day, while others may need short hospital observation. Return to full activity is gradual and depends on the treating doctor’s advice.
What are the risks and side effects of cryosurgery?
Common side effects may include pain, swelling, bruising, redness, blistering, tenderness, or temporary skin changes at the treatment site. Internal cryoablation may also cause tiredness, mild fever, or flu-like symptoms for a short period.
Risks vary by the site treated. For example, prostate cryoablation may cause urinary symptoms or erectile dysfunction. Liver or kidney cryoablation may carry risks such as bleeding, infection, urine leak, or injury to nearby structures. Serious complications are uncommon but possible, and all risks are explained before the procedure.
Can cryosurgery be repeated if cancer returns?
Cryosurgery may be repeated in selected cases if a tumour recurs in the treated area or if new lesions develop.