Abstract
Osteoradionecrosis of the jaws mainly occurs in the mandible but rarely in the maxilla due to anatomical factors. This report describes a rare case of maxillary osteoradionecrosis that occurred 2 years 2 months after treatment of advanced cancer of the maxillary sinus.
Because of advanced cancer of the maxillary sinus (T3N0M0), a 74-year-old female underwent 50 Gy irradiation with intraartial infusion of 2, 500 mg 5-Fu, tumor reduction surgery, and 24 Gy intracavitary brachytherapy with high dose rate iridium from March to May in 1993. While the cancer was well controlled by these treatments, the patient was found to have abscess formation in the left inf raorbital region on June 26, 1995 and ref errend to our department on July 10, 1995.
After incision of the abscess, conservative treatment was given to the patient as an outpatient; sequestration began to occur; and the sequester (24×15mm) in the left orbital base was separated on October 17, 1995. Although the inflammation disappeared, a full-thickness skin defect (18×8mm) penetrating through the maxillary sinus in the left inf raorbital region developed. This defect was reconstructed by using the triangular hinge flap below it and the buccal local flap. The result of reconstruction was esthetically satisfactory.
