Journal of Cutaneous and Aesthetic Surgery
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INNOVATIONS
Year : 2014  |  Volume : 7  |  Issue : 2  |  Page : 118-120

Targeted cryotherapy using disposable biopsy punches


Medical Director of S. P. Derma Center, Dermatosurgery and Laser Training Center, Madurai, Tamil Nadu, India

Correspondence Address:
Dr. Avitus John Raakesh Prasad
F#23 S. P. Derma Center, Bishop Complex, Arasaradi, Madurai - 625 010, Tamil Nadu
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-2077.138357

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Cryotherapy is a commonly used office procedure that causes destruction of tissue by cryonecrosis due to rapid freezing and thawing of cells. The limitation in treating plantar warts and deeper dermal lesions is that the freeze time should be longer to penetrate deeper, which results in collateral damage to normal skin surrounding the lesion. This results in unwanted side effects of prolonged pain, blistering and haemorrhage and increased healing time. The cone spray technique was used to reduce collateral damage, but deeper penetration is difficult to achieve. An innovative technique using disposable biopsy punches is described that ensures deeper freezing as compared to the plastic cone. The metal cutting edge of the punch enters deeper into the lesions as the liquid nitrogen is passed, sparing damage to surrounding skin.


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