Giant intradiploic dermoid cyst of the frontal bone with involvement of frontal sinus in an elderly patient

摘要

In the craniofacial region, dermoid cysts are rare and most cases involve the orbit, nasal, and paranasal spaces close to the midline. They arise near the suture lines. We describe the case of a giant intradiploic dermoid cyst involving the frontal bone and frontal sinus.A 50-year-old female, presented with a slowly enlarging, painless swelling over the right forehead. The swelling was firm in consistency, free from the overlying skin. There was vision difficulty, as the large swelling was obstructing the normal vision [Figure 1], but there were no neurological deficits. A computed tomography (CT) scan showed an isodense lesion in the intradiploic space of the right frontal bone and frontal sinus.