Primary aneurysmal bone cyst of maxillary sinus-report of a rare case

Abstract

Aneurysmal bone cyst (ABC) is a non-neoplastic expansile bone lesion that is common in the long bones. Only 2% of these occur in the head and neck region. Mandible is usual site of involvement in facial skeleton Their occurrence in the maxilla is rare. Our case report describes a primary aneurysmal bone cyst (ABC) of the maxillary sinus in a 18-year-old female. The patient presented with progressive, rapidly growing swelling of the left cheek. Imaging studies showed a heterogeneous contrast enhancing mass expanding the left maxillary sinus. The lesion was resected endoscopically and histological examination revealed aneurysmal bone cyst.