Two-Hole Trephination (Muntarbhorn) Technique for a Large Frontal Sinus Osteoma: A Case Report
Sanguansak Thanaviratananich MD, MSc*, Pornthep Kasemsiri MD*, Poonsiri Sinawat MD**
Affiliation : *Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand ** Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
Objective : To present an alternative surgical option for frontal sinus osteoma
Material and Method: A woman presented with a symptomatic large osteoma in right frontal sinus. Two-hole trephination
was planned to remove the osteoma using nasal endoscope and a drill in each hole.
Results : The osteoma was drilled and removed transnasally. Two months later, two small fragments of osteoma were detected
remaining in the lateral aspect of the sinus. The fragments were removed successfully with the same technique. The patient
was asymptomatic six months postoperatively.
Conclusion : Two-hole trephination technique or Muntarbhorn technique is an attractive option for frontal sinus osteoma.
Keywords : Osteoma, Paranasal sinus neoplasms, Frontal sinus
