OSTEOBLASTOMA OF THE NASAL CAVITY ARISING FROM THE PERPENDICULAR PLATE OF THE ETHMOID BONE

The presence of a benign osteoblastoma in the ethmoid sinus is rare an d only a few cases have been reported. This is a case of a benign oste oblastoma arising from the perpendicular plate of the ethmoid bone wit h extension to the nasal cavity. The diagnosis and management of this unusual lesion, as well as the histopathology and the imaging characte ristics are reviewed. We also review the previously reported cases of benign osteoblastomas of different origin, with nasal cavity involveme nt.