1. What are the common laryngeal diseases? The larynx is located above the trachea and below the oropharynx, and has four major functions: breathing, swallowing, vocalizing and coughing. Laryngeal diseases include inflammation and laryngeal swelling, inflammation of the larynx including acute laryngitis, chronic laryngitis and laryngeal tuberculosis. Laryngeal masses include two aspects: (1) benign laryngeal masses: such as vocal polyps, vocal cord nodules, vocal cord leukoplakia, vocal cord cysts, laryngeal papillomas. (2) Malignant laryngeal masses: laryngeal cancer occurs in the vocal cords, ventricular band, epiglottis, spoon epiglottic folds and laryngeal chamber Qinhuangdao Harbor Hospital ENT Li Shusan 2, the causative factors of laryngeal diseases are those? (1) inflammation: bacteria, viruses and pathogenic microorganisms. (2) Excessive use of voice: the vocal cords do not get rest. (3) Physical and chemical factors: tobacco, alcohol, inhalation of harmful gases. 3, those who are prone to throat disease? (1) Teachers, salesmen, unit leaders. This part of the people talk a lot and long time easy to suffer from vocal cord nodules and vocal polyps. (2) Singing actors, sketch comedians. Comic master Li Wenhua suffered from laryngeal cancer, the famous singer Liu Huan suffered from vocal polyps. (3) athletes: especially weightlifters are prone to vocal polyps. 4, laryngeal diseases have those common symptoms? Laryngeal diseases have the following common symptoms: (1) dry throat, throat itching, throat foreign body sensation. (2) hoarseness, mute. (3) Difficulty in breathing. (4) Neck mass. 5, with the above symptoms should do? We all know that diseases should be detected and treated early, with the above symptoms should be to the regular hospital to find a specialist doctor for examination and treatment, our hospital in July this year, the introduction of German imports of fiber laryngoscopy with a diameter of only 3, 5mm, this is the only fiber laryngoscopy in Qinhuangdao City, which plays an absolute role in the diagnosis of laryngeal diseases. 6.Fiber laryngoscope has those characteristics? Simple operation: (1) patients with little pain, all the people who are older than 5 years old can be examined. (2) Clear vision. (3) with a TV monitoring system can be dynamic observation, computer can store images, can print. Patient medical records can be archived. (4) It can not only observe the larynx, but also the patient for nasopharyngeal, nasal cavity, tympanic membrane inspection imaging. 7, how to treat laryngeal diseases? (1) acute and chronic laryngitis need to anti-inflammatory and vocal abstinence, so that the vocal folds fully rest, generally can be cured. (2) Benign masses: vocal polyps, vocal nodules, vocal cysts, laryngeal papillomas, epiglottis cysts can be eradicated under indirect laryngoscopy or supportive laryngoscopy. (3) Laryngeal cancer: once diagnosed, surgery should be performed immediately. 8.How to prevent laryngeal diseases? (1) If you are addicted to smoking and drinking, quit smoking and drinking. (2) Friends who speak a lot, speak less, pay attention to the sound rest, engaged in interpretation, singing comrades pay attention to the scientific use of voice. (3) hissing, mute friends near the early hospital checkups, early detection, early treatment.