what are the symptoms of tonsillitis cancer?
['A sore in the back of the mouth that will not heal.', 'A tonsil that is larger on one side.', 'Blood in the saliva.', 'Mouth pain.', 'Difficulty chewing, swallowing or speaking.', 'Persistent sore throat.', 'Intolerance to eating or drinking citrus foods.', 'Severe ear pain.']