Chapter 4 Frontal Sinus and Draf Approaches
10.1055/b-0037-143510 Chapter 4 Frontal Sinus and Draf Approaches Eugenio Cárdenas, Ariel Kaen, Isam Alobid, Manuel Bernal-Sprekelsen Introduction The endonasal approach to the frontal sinus is considered one of the most…