Transmandibular approach for excision of maxillary sinus tumors extending to pterygopalatine and infratemporal fossae

Abstract

En bloc resection of maxillary sinus tumors that extend through the posterior wall necessitates resection of maxilla along with pterygopalatine and infratemporal fossae contents. This cannot be readily performed by conventional anterior maxillectomy approaches. The objective of this study is to evaluate the effectiveness of transmandibular approach for the excision of maxillary sinus tumors extending to pterygopalatine and infratemporal fossae. This is a retrospective review of 15 consecutive patients who underwent maxillectomy with transmandibular approach for tumors with posterior extension, between January 2004 and February 2008. The principal outcome parameter was the margin status on final histopathology report. In addition, evaluable patients were reviewed to assess the morbidity of the procedure using pre-defined parameters. All the patients had negative margins at the infratemporal fossa region. Varying degree of trismus was present in all patients. The cosmetic outcome of the procedure was excellent. Other anterior and transcranial approaches could be combined with this procedure when indicated. We conclude that transmandibular approach is an effective technique for resection of maxillary tumors with posterior extension to the pterygopalatine and infratemporal fossae. The procedure has acceptable morbidity and the aesthetic and functional results are satisfactory.