Laryngeal cancer

Carcinoma of larynx is a relatively common malignant tumor with an incidence of about 1 to 5% of whole body tumors. It is second only to nasopharyngeal cancer and nasal cavity and sinus cancer in the field of otolaryngology . The prevalent age is 50 to 70 years. Men are more common than women, about 8: 1, with the highest incidence in Northeast, North and East China. The cause is not very clear, but the patient has a long history of smoking. Symptoms vary depending on where the cancer sounds. Hoarseness can occur in the early stage of vocal cord cancer, and in the early stage of the glottic cancer, it is often manifested as discomfort in the throat or frozen foreign body, pain, and often not obvious, which is likely to delay diagnosis. In the later stage, obvious hoarseness, throat wheezing, shortness of breath, dyspnea, pain, swallowing disorders, and swelling of the neck mass and cervical lymph nodes may occur.