Cryosurgery is a type of surgery that involves the use of extreme cold to destroy abnormal tissues, such as tumors.
The surgery most often involves the use of liquid nitrogen, although carbon dioxide and argon may also be used. When liquid nitrogen has a temperature between -346 and -320°F, it instantly freezes nearly anything that’s in contact with it. In the case of human tissue, it can kill and destroy cells upon contact. This is important when the cells you want to kill are cancerous.
Cryosurgery is typically used for tumors or precancerous lesions found on your skin. However, some tumors inside the body can be treated this way as well.
Cryosurgery, also called cryotherapy, is similar to the technique used when doctors freeze off warts using liquid nitrogen spray.
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Why cryosurgery is performed
Cryosurgery is used to destroy problem tissues in the body. In most cases of cancer, it’s not the first line of defense.
Cryosurgery is most often performed to treat cancers or precancerous lesions on the skin. It’s also used on some internal organs, such as the liver, when disease and other problems make conventional surgery difficult or risky.
Cryosurgery is used as the primary treatment for early prostate cancer that’s contained in the prostate. It’s also performed when cancer returns after other therapies have been used.
Cryosurgery does have risks, but they’re considered lower than other cancer treatments, such as surgery and radiation.
The risks associated with cryosurgery include:
. Damage to nearby healthy tissue or vessels
. A loss of sensation if nerves are affected
. Skin discoloration
How to prepare for a cryosurgery
Your preparation for cryosurgery depends on the type being performed. Cryosurgery for skin cancer, which is the main reason cryosurgery is used, requires little preparation on your part.
If your doctor is treating an internal organ with cryosurgery, you’ll probably be given the same instructions that you’d get before traditional surgery. You’ll be asked to fast for 12 hours beforehand and arrange for a ride home from the procedure.
Before the procedure, tell your doctor if you have an allergy to anesthesia, as well as medications you’re taking, including over-the-counter medications and nutritional supplements.
Your doctor will provide you with complete instructions for preparing for the surgery.
How a cryosurgery is performed
Your doctor will place liquid nitrogen on your skin using a cotton swab or spray. A numbing medicine may be used to prevent pain or discomfort.
If an internal area is being treated, your surgeon will use a scope, which is a flexible tube that can fit into various openings in your body, such as the urethra, rectum, or a surgical incision.
The liquid nitrogen is fed to the area under treatment and applied to the targeted cells. The cells freeze, die, and then will be slowly absorbed by your body.
Your doctor will use imaging equipment, such as an ultrasound, as a guide for carrying out the procedure.
After most cryosurgeries, you can go home the same day. However, you may have to stay in the hospital for a few days if the surgery was on an internal organ.
After the procedure, you’ll need to care for any incision wounds or places where the skin has been frozen. Care typically involves keeping the area clean and changing the bandages to prevent infection.
You’ll have follow-up appointments in which your doctor will determine how successful your treatment was, if you have any complications, and whether you’ll need more cryotherapy.