Liquid nitrogen

Liquid nitrogen: Nitrogen in a liquid state. Liquid nitrogen is supercool -- about 200 degrees Celsius (320 degrees Fahrenheit) below zero -- and is used for cryopreservation, cryosurgery, and cryomedicine.
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Liquid Nitrogen
Definition
Nitrogen is typically found in its gaseous form. To become a liquid, nitrogen gas must release great amounts of heat, becoming super-cooled to about minus 200 degrees Celsius.
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Liquid nitrogen: This is only applied by a medical doctor. Liquid nitrogen freezes the wart, which then forms a scab and drops off. Repeat applications are sometimes needed.
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CRYOTHERAPY: Using liquid nitrogen to freeze and destroy a lesion or growth; sometimes used to induce scar formation and healing to prevent further spread of a condition (eg, warts or Molluscum contagiosum).
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During this type of surgery, your doctor uses very cold material, such as liquid nitrogen spray, or a cold probe to freeze and destroy cancer cells or cells that may become cancerous, ...
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In the simplest technique, usually reserved for warts and other benign skin growths, the physician will dip a cotton swab or other applicator into a cup containing a "cryogen," such as liquid nitrogen, ...
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Cryosurgery -- An instrument sprays liquid nitrogen onto the skin, freezing and destroying the tissue. Sometimes, cryosurgery is repeated a second time to remove the growth completely.
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Liquid nitrogen creates the cold. The doctor applies liquid nitrogen directly to the skin growth. This treatment may cause swelling. It also may damage nerves, which can cause a loss of feeling in the damaged area.
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In some cases, applying liquid nitrogen (cryotherapy) to warts will freeze the tissue and make warts disappear. Some larger warts require laser treatment, or surgical removal.
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Freezing a verruca with liquid nitrogen speeds up the process by partly killing the virus and partly destroying the skin that the virus lives in.
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A health professional applies liquid nitrogen to and around the warts.
It is applied for 10 to 30 seconds to freeze the tissue, then allowed to thaw, and then frozen again.
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The cold is introduced through a probe which has liquid nitrogen circulating through it. To destroy diseased tissue, the tissue is cooled to below -20 degrees Celsius.
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DRY ICE - Nitrogen in the liquid state. Liquid nitrogen is commonly used in cryotherapy.
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cryotherapy--freezing of the warts with liquid nitrogen
laser treatment--a high-intensity light beam used to destroy the infection
electrosurgery--an electric current used to burn or remove the infection with a wire loop ...
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Topical treatments to eradicate the lesions include trichloroacetic acid, podophyllum, and liquid nitrogen.
Surgical treatments include cryosurgery, electrocauterization, laser therapy, or surgical excision.
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If the lesions are quite noticeable and persistent, however, the doctor may recommend removing them by freezing with liquid nitrogen. Alternatively, the doctor may apply a substance that causes blister formation, which also destroys the lesions.
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Warts are treated by surgical excision (sometimes by electrocautery), bloodless removal by freezing with liquid nitrogen, or repeated applications of ointments or creams.
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