Throat cancer starts in the pharynx or larynx, which is part of the body’s respiratory and digestive systems. The pharynx is located behind the nasal cavity and mouth. It is the gatekeeper that allows food and liquids into the esophagus and conducts air to the trachea and lungs. The larynx (voice box) starts in the lower throat and contains the vocal cords, helps with speech and keeps fluids or food from entering the windpipe. Throat cancer may also include the tonsils.
According to the American Cancer Society, new cases of larynx cancer are decreasing by 2% to 3% each year — most likely due to fewer people smoking tobacco.