title: [Technical improvement in maxillary sinus endoscopy].
mesh_terms: D001706:Biopsy; D019723:Endoscopes; D006801:Humans; D008443:Maxillary Sinus; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis
vernacular_title: Technische Verbesserungen der Kieferhöhlen-Endoskopie.