Tonsil cancer occurs in one of the three types of tonsils of the throat like the palatine tonsils, which are located on either side of the throat, although it can also occur in the pharyngeal tonsils (also called adenoids), which are behind the nasal. Symptoms of tonsil cancer include a sore at the back of the throat that does not heal, or one tonsil that is bigger than the other. It may or may not be painful. It cause bleeding, bad breath, or altered taste. Larger cancers can interfere with eating, talking or breathing, and may make it di Radiation therapy or surgery can be effective in treating.