Some skin lesions should be examined using a dermatoscope before removal. It is an optical device that magnifies 10 - 20 times, with side illumination, which allows to obtain a "three-dimensional image" of the skin. The purpose of the dermatoscope examination is to initially differentiate skin conditions, e.g. pigmented moles, malignant melanoma, blue nevus, seborrheic wart, hemangioma and many others.
Electrocoagulation is a procedure that involves the destruction of skin lesions using high-frequency electric current. It consists of applying the electrode to the lesion and destroying it with an electric arc that appears between the active electrode (applied to the lesion) and the passive electrode. The current flowing through the electrodes generates heat which causes thermal damage (cutting, coagulation) of proteins located in the tissue. During the procedure, the temperature reaches 200 degrees C, therefore the damage to undesirable changes is immediate.
It is a method of treatment with cold, consisting in local, strong freezing of the tissue using the so-called "snow" nitrous oxide or liquid nitrogen. After freezing, damaged tissues undergo spontaneous demarcation, and the tissue is properly rebuilt, without fibrosis or cavities. The resulting scar is flexible, collagen-free, with good cosmetic effects, difficult to achieve with other methods. The treatment is bloodless, a vesicle may appear, then a scab which falls off after about 2 weeks.