title: Pathologic quiz case 1: cemento-ossifying fibroma of the ethmoidal sinus.
mesh_terms: D000293:Adolescent; D002485:Cementoma / Q000473:pathology / Q000601:surgery; D005005:Ethmoid Sinus / Q000601:surgery; D005260:Female; D005350:Fibroma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D009808:Odontogenic Tumors / Q000473:pathology* / Q000601:surgery; D009999:Ossification, Heterotopic; D010255:Paranasal Sinus Neoplasms / Q000473:pathology* / Q000601:surgery