1 and hoarseness are the earliest signs of laryngeal cancer. Laryngeal cancer is a tumor that grows on the vocal cords. Even if it is small, it will cause hoarseness. Any adult who has hoarseness for unknown reasons and lasts for more than two weeks should have a careful throat examination and should not take it lightly. Because at this time, the patient is anodyne, often mistaken for "cold" or "pharyngitis". However, hoarseness caused by cold and inflammation will improve quickly with the disappearance of inflammation, while hoarseness caused by laryngeal cancer will gradually increase, and gradually develop into a thick and hoarse voice until it is completely lost.

2. Foreign body sensation, sense of urgency or discomfort in swallowing are the early symptoms of supraglottic laryngeal cancer. However, the initial symptoms of this type of cancer are often not obvious, and it was not discovered until the second or third stage, and the medical history can last for months. Therefore, if middle-aged and elderly people have throat discomfort, they should have a comprehensive and meticulous examination, and must not be treated rashly with pharyngeal paraesthesia or chronic pharyngitis, thus delaying the precious treatment opportunity.

3, because tumor stimulation can produce irritating dry cough, blood in sputum, patients often have a sticky feeling of mucus, so they often "wash their throats." After the tumor is enlarged, it will block the airway, make the tracheal secretions not discharge smoothly, cause respiratory infection, wheezing and even dyspnea, and in the middle and late stage, it will be manifested as persistent cough and pronunciation change.

4. Laryngeal cancer complicated with ulcer, inflammation or thyroid cartilage periostitis can cause reflex pain of nerves, manifested as ipsilateral headache and earache. These symptoms mainly appear in patients with supraglottic tumors.

5, vocal cord polyps sometimes appear hoarseness, and a few of them can also cause cancer. Therefore, it is best to remove vocal cord polyps as soon as possible, and those who are not suitable for surgery should be followed up regularly. Some laryngeal diseases, such as pachydermosis, leukoplakia of laryngeal mucosa and papilloma of larynx, may also turn into cancer. This is called "precancerous lesions" and must be followed up regularly, just in case.