Radiofrequency ablation (radiosurgery) is a dermatosurgical procedure that aims at the surgical management of benign and malignant skin conditions by using various forms of alternating current at ultra high frequency (500-4000 kHz). It is also popularly known as “cold cautery”. The most common form of radiofrequency ablation used in dermatology involves the application of high-voltage electromagnetic energy in the form of a damped sine wave. This form of current may be applied by electrofulguration, electrodessication or electrocoagulation. Radiofrequency ablation (RFA) has gained importance in the recent years as it is highly effective in the cutting of the skin lesions with adequate hemostasis at the same time because of good coagulation. Radiofrequency can be used for incisional techniques that produce full-thickness excision of nevi, shave techniques that produce partial-thickness removal of superficial lesions and removing vascular lesions such as hemangiomas or pyogenic granulomas.
Ellman Radio frequency ablation is a simple, safe procedure with wide applications. It causes less lateral heat spread and tissue damage and provides better control. The cutting mode of radiofrequency is more effective and versatile and as hemostasis occurs simultaneously, the time required for the surgery is less.
a. Diagnostic: Skin biopsy, excision of cysts and abscesses.
b. Infections: Verrucae, pyogenic granuloma and molluscum contagiosum.
c. Metabolic: Xanthelasma, xanthomas
d. Benign skin conditions: Freckles, dermatitis papulosa nigra, acne, skin tags, cherry angiomas, spider angiomas, naevi, trichoepithelioma, syringomas, apocrine hidrocystomas, stucco keratosis, papilloma, neurofibromas, cutaneous horn, keratocanthoma, rhinophyma, sebaceous hyperplasias.
e. Senile skin conditions: Actinic keratosis, sebborheic keratosis and senile lentigenes.
f. Malignant skin tumors: Squamous cell carcinoma, basal cell carcinoma, dermatofibroma sarcoma protuberans and carcinoma in situ lesions of the skin and orogenital mucosa.
g. Nail procedures: Nail matrixectomies, surgical hemostasis of ingrown toenail and onychogryphosis.
h. Cosmetic indications: Mole removal, telangiectasia, unwanted white hair removal, scar revision.