Most cancers of the larynx being on one of the vocal cords. As even a very small tumour can prevent the two vocal cords meeting together and vibrating properly, a hoarse voice usually occurs very early in the course of the disease. In fact, hoarseness is the most important and frequent sign of early cancer of the larynx. If you are middle-aged or older and have had a hoarse voice for longer than six weeks you should ask to be seen by an ENT (ear, nose and throat) specialist.

You can refer to the following website for more information on investigating, making diagnosis and treatments for Laryngeal Cancer.

Information of Laryngeal Cancer