Staging in the treatment of maxillary carcinoma revisited.

The site of origin of maxillary sinus carcinoma will not infrequently predetermine the varied neurological signs at presentation. Modifying Ohngren's division, the maxillary sinus can be divided into four quadrants based on anatomical nerve correlates, thus facilitating identification of the primary site. An inclusive classification of maxillary sinus carcinoma based on Broder's grading, site of origin, the TNM classification and the patient's general condition, serves as the basis for a correlative therapeutic regimen.