Solitary Peripheral Osteoma of the Mandible presented as Trismus

Abstract

ABSTRACT Osteoma is rare benign tumors of bone commonly seen in the maxillofacial skeleton. Peripheral osteoma is more frequent in the mandible than the maxilla. The present article is a case report of peripheral osteoma at angle of mandible below the masseter muscle. Though the lesion is benign, the reduced mouth opening caused a lot of inconvenience to the patient. The patient's primary complaint was trismus and swelling at angle of mandible. The computed tomography (CT) scan was diagnostic of calcification at the angle. The differential diagnosis includes osteoma and calcification in masseter muscle. The lesion was excised through Risdon's incision. The surgical dissection of muscle fibers revealed the attachment of the bony lesion on the outer cortex of angle. The histopathological diagnosis confirmed the diagnosis of osteoma. The location of lesion below the masseter muscle resulted in lot of inconvenience of reduced mouth opening and diagnostic difficulty. The excision was followed by physiotherapy to increase the mouth opening. How to cite this article Manekar VS, Dewalwar V. Solitary Peripheral Osteoma of the Mandible presented as Trismus. Int J Head Neck Surg 2014;5(3):161-164.