Cryosurgery (Caring & Treating Since 2005)
What is Cryosurgery?
Cryosurgery is commonly used for the treatment of skin conditions such as Sun Damaged Skin (Actinic or Seborrhoeic Keratoses), Viral Warts (Human Papilloma Virus warts or Molloscum Contagiosum) and other benign (non-cancerous) skin lesions.
Cryosurgery can also be used to treat scars such as stubborn hypertrophic or keloid scars. Studies have shown 85% efficacy compared with traditional intra- scar steroid injections.
There are other different modes of treatment for these skin conditions as well – including traditional surgical excision, lasers, electrocautery surgery and cryosurgery. Some treatment modalities are better than the others for different conditions and it is important to discuss with our doctors which would suit your condition the best.
Cryosurgery? Visit our any of our Clinics or drop us an email at firstname.lastname@example.org for an appointment with our doctor.
How Does Cryosurgery Work?
Most warts and benign lesions are targeted at -30 to -50C. The technology behind cryosurgery involves using liquid nitrogen at temperatures between -50C to -196C. At -50C, patients do not experience much pain or discomfort, however the current technology behind -50C results in temperatures which fluctuate, which can give a variable or ineffective treatment result. The alternative is liquid nitrogen at -196C which may be uncomfortable for patients to tolerate.
At our Cryosurgery clinic in Singapore, we employ a constant temperature of -89C, with an average application of time of 12 seconds, freezing the target tissue to a depth of 3 mm, by a diameter of 10 mm. This is better tolerated in terms of discomfort and achieves a more constant therapeutic outcome.
The top layer peels off within 1-3 weeks and takes all or part of the original growth with it.
What to Prepare Before Cryotherapy?
If you have decided on visiting us, make an appointment with us today and our doctors will assess the skin condition and make a diagnosis.
Before commencing any treatment, we would also go through with you the conditions which may make cryosurgery unsuitable for you. Conditions such as an autoimmune disease, immune suppression medication, skin lesions in sensitive areas (eyes, near blood vessels, nasal folds), undiagnosed skin lesions, poor circulation, all can be a relative contraindication to cryosurgery.
There is no need to fast and you can still eat and drink prior to the procedure.
What to Expect During Treatment?
Cryosurgery does not normally require a local anaesthetic. During cryosurgery, patients may feel a light tickle and sting as the lesion is frozen and then thawed.
Each lesion takes no more than a few minutes to treat depending on its size and thickness.
The frozen skin becomes white during treatment and takes a further few minutes to thaw back to room temperature.
The discomfort initially felt, would also last not more than a few mins. The process may be repeated if necessary once the skin has thawed.
Immediately after treatment, welling and redness may occur. This is the normal response to freezing the skin. This usually settles after 2-3 days.
Are there any Follow up
In the following days, a blister may form before it turns into a necrosis scab, peeling off after about 10 to 14 days.
Do not be alarmed as the listers do not mean the skin has been over frozen but is a body’s natural response to the freeze, thaw process of the lesion.
Sometimes these blisters may be filled with blood. This is harmless and should only be punctured with a sterile needle if necessary.
Every patient’s response to treatment is different. Some may undergo the above post-treatment effects whilst others a mild scarring or change in skin colour.
This skin colour re-pigmentation change comes back after a few weeks. However, this could also take longer depending on the type of skin.