*2.2.5 Argon plasma coagulation*

Argon plasma coagulation (APC) originally has been used on gastrointestinal lesions under endoscopy then it has been introduced into otolaryngological field [42]. In this method, the current flow is conducted through ionized argon gas (socalled plasma)[43]. The equipment consists of a deliverer of argon gas connected to a high-frequency current generator; the argon, ionized by the monopolar current, covers the surface of the area to be coagulated, without touching it, with a penetration inside the tissue of not more than 2–3 mm [44]. The short tissue vaporization, the rapid application, and the very short propagation of postcoagulation smoke bring further advantages in the performance of small operations in restricted areas as into nasal region [45].
