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Causes of laryngeal cancer. Laryngeal cancer is caused by changes in the cells of the larynx, although it's not clear exactly why this happens. All cancers begin with a change in a cell's DNA. DNA provides our cells with a basic set of instructions, such as when to grow and reproduce.his causes the cells to reproduce in an uncontrollable manner, producing a growth of tissue called a tumour. It's not known why the DNA inside the cells of the larynx is affected in cases of laryngeal cancer.
1 Oropharyngeal cancer is a disease in which malignant (cancer) cells form in the tissues of the oropharynx. 2  Smoking or being infected with human papillomavirus can increase the risk of oropharyngeal cancer. 3  Signs and symptoms of oropharyngeal cancer include a lump in the neck and a sore throat.reatment of stage IV oropharyngeal cancer that has spread to other parts of the body or that has recurred (come back) may include the following: 1  Radiation therapy. 2  Surgery. 3  Chemotherapy for patients with cancer that has spread to other parts of the body or recurrent cancer that cannot be removed by surgery.