Endoscopic Pterygoid Process Resection Without Maxillary Sinus Breach in Total Maxillectomy.

This technical note describes two endoscopic transnasal techniques for pterygomaxillary junction detachment during total maxillectomy that preserve the integrity of the maxillary sinus. A lower cut at the level of the nasal floor and an upper cut below the vidian canal are presented through cadaveric dissection and a clinical case. These sinus-sparing approaches enable direct visualization of the posterior maxillary osteotomy, facilitate assessment of posterior margins, and maintain the tumor within an intact maxillary sinus compartment.