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Cryosurgery is used to treat a number of diseases and disorders, most especially skin conditions like warts, moles, skin tags and solar keratoses. Liquid nitrogen is usually used to freeze the tissues at the cellular level. The procedure is used often as it is relatively easy and quick, can be done in the doctor's office, and is deemed quite ...
The liquid nitrogen may be applied to lesions using a variety of methods, such as dipping a cotton or synthetic material tipped applicator in liquid nitrogen and then directly applying the cryogen onto the lesion. [3] The liquid nitrogen can also be sprayed onto the lesion using a spray canister. The spray canister may utilize a variety of ...
Although liquid nitrogen is the proper traditional method of skin lesion cryosurgery, other similar technologies are now common. The generic term for this alternative approach seems to be PORTABLE. The typical cost seems to be about US $5 per lesion treated, for the freezing materials:
De Quervain successfully used of carbonic snow to treat bladder papillomas and bladder cancers in 1917. Dr. Irving S. Cooper, in 1913, progressed the field of cryotherapy by designing a liquid nitrogen probe capable of achieving temperatures of -196 °C, and utilizing it to treat of Parkinson's disease and previously inoperable cancer.
Medical cryotherapy gun with liquid nitrogen. In medical applications, spray cans containing dimethyl ether [4] or tetrafluoroethane may also be used to freeze and destroy tissue, for removal of warts and skin tags, or other uses in cryosurgery. Liquified petroleum gas including propane and butane is sometimes used.
A tank of liquid nitrogen, used to supply a cryogenic freezer (for storing laboratory samples at a temperature of about −150 °C or −238 °F) Controlled-rate and slow freezing, also known as slow programmable freezing (SPF), [18] is a technique where cells are cooled to around -196 °C over the course of several hours.
Affected skin becomes numb, turns white or blue, and develops blisters. [1] Frostnip is a superficial skin injury that won't freeze the skin or cause long-term damage. [8] Frostbite involves freezing of fluids inside and outside of cells that results in cell breakdown, electrolyte imbalances, and inflammation. [8]
Pernio or chilblains are inflammation of the skin from exposure to wet, cold (non-freezing) conditions. They can appear as various types of ulcers and blisters. [10] Bullous pemphigoid is a condition that causes itchy blisters over the body that can mimic frostbite. [18] It does not require exposure to cold to develop.