Abstract
We modified the transseptal surgery and employed this method to the pituitary adenomas (10 cases), tumor on the posterior portion of the septum (1 case) and sphenoid sinuitis (1 case). Operative procedures were described as follows: a mucosal incision was made on the right side of the septum as posteriorly as possible and from there mucosal separations were performed along both sides of the septum and then speculum was introduced from the pyriform aperture in the right side. The advantages of the technique were easiness to perform, reduction of bleeding and shortening of the operating time owing to keeping the anterior portions of the septum intact. Insertion of the speculum from the unilateral pyriform aperture allowed opening of the speculum widely enough and midline access to the sphenoid sinus. Nasal complications were not noted. These procedures are useful for the extracranial approach to the pituitary gland and the microsurgery for the posterior portions of the septum, epipharynx and sphenoid sinus.
