JAPANESE JOURNAL OF ORAL & MAXILLOFACIAL SURGERY

Vol. 54 No. 3       2008

ISSN: 0021-5163      UBIC: 151-J

ABSTRACT

We describe a case of ossifying fibroma arising at the inferior border of the left zygomatic arch. A 22- year-old woman presented with a swelling and pain in her left cheek. A bony hard mass was found in the diffuse swelling of the cheek, adjacent to the zygomatic arch. CT imaging showed a bony, dense lesion in the left zygomatic/masseteric region. Interposition of soft tissue between the bony tumor and the zygomatic arch was recognized. Under a diagnosis of a benign bony tumor, the tumor was enucleated with the patient under general anesthesia. The 1-iistopathological diagnosis was an ossifying fibroma. An ossifying fibroma arising at the inferior border of the zygomatic arch has not been reported previously, and the origin of the tumor is unclear. The patient has remained relapse free for more than 2 years after the operation. Key words: ossifying fibroma, zygomatic arch, bone-related lesions.

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