PERIPHERAL OSTEOMA OF THE MAXILLARY SINUS: A CASE REPORT

ABSTRACT

The Osteoma is a benign tumor characterized by proliferation of compact or cancellous bone, that may form peripherally in a periosteal location or in a central position. The most common site of peripheral osteoma in craniofacial area is the frontal sinus, but rare in the maxillary sinus. Clinically, this lesion that shows slow growing without symptoms can produce swelling and cause asymmetry. This tumor may arise at any age, but slightly more frequently in men than in women, and more common in young age. Radiographically, this lesion appears as a well-circumscribed radiopacity and histopathologically shows proliferation of either compact or cancellous bone. The etiology of ostemas in the paranasal sinus is unknown, but it has been suggested that they are frequently associated with infection and trauma, and in a certain cases are believed to develop in sinus polyps, which are an inflammatory reaction. The treatment of osteoma is surgical excision, but need not be excised unless it causes obstruction to a sinus cavity or disturbing cosmetically, and this tumor usually does not recur after surgical removal. We report a case of peripheral osteoma on the maxillary sinus in 46 male-patient who came our hospital for discomfort of the left cheek and TMJ area.