When it comes to laryngeal cancer, I believe many friends do not know much about this disease. Laryngeal cancer is a relatively common malignant tumor, the incidence rate of which accounts for about 1-5% of the whole body tumors, and it is a disease with a relatively high incidence. Let’s take a look below. 1.Respiratory difficulty When the tumor severely deteriorates and increases in size at the primary site, it will directly obstruct the trachea and affect breathing or cause poor discharge of tracheal secretions, thus leading to respiratory difficulty. This kind of imagination usually occurs only in the advanced stage of laryngeal cancer. 2.Coughing up blood Due to the stimulation of tumor, it can produce irritating dry cough, and patients often have the feeling of mucus sticking, and when they clear their throat, they will find blood in sputum, which is usually manifested as continuous cough in the middle stage, and in the advanced stage, symptoms such as blood in sputum will appear. It is also one of the symptoms of typical laryngeal cancer. 3. Blood in sputum Because the tumor has a lot of abnormal neovascularization, patients often find blood in mucus or sputum after coughing. This kind of symptom is mainly seen in patients with supraglottic and infraglottic tumors and patients with middle and late stage vocal cord tumors, while early vocal cord tumors usually do not produce bleeding. 4.Sense of pain in inner ear When laryngeal cancer develops to a certain extent and produces ulcers and serious inflammation in the stomach of throat, it can cause reflex pain of nerves. Early vocal cord tumors usually do not produce reflex pain. Reflex pain is mainly found in patients with middle and advanced supraglottic type tumor. 5. Persistent hoarseness of voice Hoarseness is the earliest and most common sign of laryngeal cancer. Most cases of laryngeal cancer start in the vocal cords, even very small vocal cord tumors can cause abnormal vibration of the vocal cords and hoarseness. Patients with unexplained hoarseness that persists for more than three weeks and shows no signs of gradual improvement should seek prompt medical attention and have a careful laryngeal endoscopy performed by an ENT specialist.