Abstract
In the present paper, the authors made dicussions on the operation procedures of the frontal sinusitis referring to the past literatures. The authors, then, reported on an operation procedures consisting of the followings:
Prolongation of the incision of the mucus membrane of the oral cavity according to Luc-Caldwell toward the median side; operation on maxillary sinus; of the ethmoidal cells according to Jansen Winkler; after exposing the adge of the piriform aperture, separation of the nasal mucus membrane over the area covering the bottom of the nose and medial nasal meatus from the edge of the pirif orm aperture; removal of the lateral wall corresponding to the medial nasal meatus up to approximately 5 cm from the edge of the piriform aperture; operation on the frontal sinus after freeing the nasolacrimal duct.
