[Skull base surgery using the degloving technique--an approach without facial scarring].

Skull base surgery has been performed in 16 cases for en bloc resection of the nasal cavity and paranasal sinus carcinoma invading the anterior and middle skull base in our department. The surgical approach to skull base surgery is mainly a combined craniofacial approach, which includes craniotomy via a coronal incision intracranially and a transfacial or transoral approach extracranially. The direct transfacial approaches, such as lateral rhinotomy, Weber-Furguson incision, and midfacial split, resultin facial scarring. The midface degloving procedure was reported by Casson in 1974. This method can expose the midfacial skeleton by lifting the soft tissue from the face through an intraoral approach without external scarring. The authors have modified Casson's facial degloving technique and applied it to skull base surgery. The entire cranium and facial skeleton can be extensively degloved by using coronal, gingival and conjunctival incisions. Then, en bloc resection of the craniofacial compound segment can be accomplished through this degloving approach without external scarring of the face in anterior and middle skull base surgery. The authors have performed this procedure in 2 cases, and proved it to be an extremely valuable technique, displaying excellent cosmetic and functional results with minimal complications.