title: [Operation methods: safe, logical and step by step fronto-ethmoidectomy with or without type 1, 2, 3 frontal sinusotomy - 1].
mesh_terms: D004724:Endoscopy / Q000379:methods*; D005005:Ethmoid Sinus / Q000601:surgery*; D015521:Ethmoid Sinusitis / Q000175:diagnosis / Q000601:surgery*; D005626:Frontal Sinus / Q000601:surgery*; D015522:Frontal Sinusitis / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis / Q000601:surgery*