Conservation surgery of the head and neck.
D005500:Follow-Up Studies; D006258:Head and Neck Neoplasms / Q000401:mortality / Q000532:radiotherapy / Q000601:surgery*; D006801:Humans; D007822:Laryngeal Neoplasms / Q000145:classification; D008722:Methods; D009362:Neoplasm Metastasis; D010610:Pharyngeal Neoplasms / Q000145:classification; D011182:Postoperative Care; D011183:Postoperative Complications