Open AccessTargeted cryotherapy using disposable biopsy punches
Author(s) -
Avitus John Raakesh Prasad
Publication year - 2014
Publication title -
journal of cutaneous and aesthetic surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.44
H-Index - 13
eISSN - 0974-5157
pISSN - 0974-2077
DOI - 10.4103/0974-2077.138357
Subject(s) - medicine , cryotherapy , collateral damage , lesion , biopsy , penetration (warfare) , punch biopsy , surgery , dermatology , radiology , criminology , operations research , sociology , engineering
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.