This patient presented with right-sided frontal headache. Lateral skull x-ray showed a multinodular bony density arising from the posterior table of the right frontal sinus. CT scan revealed involvement of the right frontal sinus and encroachment on the right frontal lobe of the brain.
A combined sinusotomy and craniotomy operation was achieved via a bifrontal bicoronal osteoplastic flap approach. The osteoma arose in the right frontal sinus and extended into the anterior cranial fossa.
The osteoma was delivered through the frontal sinus. The specimen is shown on the right .