title: Ossifying fibromas of the frontal-ethmoid sinuses.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005005:Ethmoid Sinus / Q000473:pathology; D005260:Female; D005350:Fibroma / Q000000981:diagnostic imaging / Q000473:pathology; D005626:Frontal Sinus / Q000473:pathology; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging / Q000473:pathology; D010255:Paranasal Sinus Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology; D011859:Radiography