The (radical antrostomy) is an external surgical procedure used to access and treat diseases of the maxillary sinus by creating a window in the anterior wall of the maxilla. While largely replaced by Functional Endoscopic Sinus Surgery (FESS) , it remains a critical "last resort" for specific conditions. 1. Key Indications

Resection or biopsy of tumors in the maxillary sinus or pterygopalatine fossa.

Access for managing midface or orbital floor fractures.