title: Fibrous histiocytoma of the paranasal sinuses. Report of a case.
mesh_terms: D002675:Child, Preschool; D005005:Ethmoid Sinus; D018219:Histiocytoma, Benign Fibrous / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D006801:Humans; D008297:Male; D010255:Paranasal Sinus Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D011859:Radiography