Post-Traumatic Peripheral Giant Osteoma in the Frontal Bone

Abstract

Osteomas are benign, slow-growing tumors that most frequently occur in the craniomaxillofacial region. These tumors are mostly asymptomatic and are generally found incidentally. A giant osteoma is generally considered to be greater than 30 mm in diameter or 110 g in weight. A 35-year-old female presented to us with complaints of a firm mass that showed continuous growth on the forehead following trauma. A hairline incision was made to expose the osteoma. Biopsy of the tumor confirmed a osteoma. There were no complications after surgery. Postoperative computed tomography revealed that the tumor was completely removed. Because a peripheral giant osteoma of the frontal bone with a history of trauma is a rare finding, thorough history-taking, physical examination, and preoperative imaging tests are needed for patients with a history of trauma to rule out a giant osteoma.

Keywords: Forehead; Frontal bone; Osteoma.

Fig. 1. Preoperative photograph of the giant osteoma on the forehead.

Fig. 2. Preoperative computed tomography image of the mass. A well-defined 4.6 cm×4.0 cm×1.5 cm radiopaque mass was observed. (A) Three dimensional image frontal view. (B) Axial view.

Fig. 3. Intraoperative photograph of the osteoma.

Fig. 4. Histopathological image of the mass. (A) H&E, ×40. (B) H&E, ×100.

Fig. 5. Postoperative computed tomography image of the mass. The tumor was completely removed.