title: Inverted papilloma with new bone formation in ethmoidofrontal region.
authors.affiliation: Otorhinolaryngology-Head and Neck Surgery Clinics, Sisli Etfal Teaching and Research Hospital, Kagithane/Istanbul Turkey.
authors.forename: Burhan
authors.initials: B
authors.lastname: Dadas
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Ercan
authors.forename: Tulay
authors.initials: T
authors.lastname: Başak
mesh_terms: D005005:Ethmoid Sinus / Q000473:pathology*; D005626:Frontal Sinus / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local / Q000473:pathology; D009999:Ossification, Heterotopic / Q000209:etiology / Q000473:pathology*; D018308:Papilloma, Inverted / Q000473:pathology* / Q000601:surgery; D010255:Paranasal Sinus Neoplasms / Q000473:pathology* / Q000601:surgery