Cryotherapy of seborrhoeic keratosis. For cryotherapy of benign skin lesions (with seborrhoeic keratosis as an example here), a mild freezing technique is used. It is most important to ensure that cryotherapy does not cause more harm than the skin lesion.
If the diagnosis of the skin lesion (here seborrhoeic keratosis) is not clear, for example if the physician is not absolutely certain that it is a benign seborrhoeic keratosis, it can be curetted; a seborrhoeic keratosis is easy to detach from the skin surface. An even, slightly raw erosive surface (dermis) will remain underneath the seborrhoeic keratosis. Oozing of blood can be stopped by applying ferric or aluminium chloride solution. Curettage alone may be sufficient for the treatment of seborrhoeic keratosis. Mild cryotherapy can be applied to the area, as necessary. For seborrhoeic keratoses, it is sufficient to freeze them all the way to the margin (freeze time about 10-20 seconds).
Seborrhoeic keratosis can also be treated by cryotherapy alone. Here you can see typical seborrhoeic keratoses underneath the breast, which can be treated by mild cryotherapy. Cryotherapy may leave light scars but the risk is low if a mild cryotherapy technique is used.
Video: Timo Ruohoalho, text: Alexander Salava
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