Submucous resection; prevention of septal perforation.
D006801:Humans; D009297:Nasal Mucosa / Q000601:surgery*; D009300:Nasal Septum / Q000601:surgery*; D009667:Nose Deformities, Acquired / Q000601:surgery*; D009668:Nose Diseases / Q000517:prevention & control*; D013525:Surgical Instruments