Re: Right tonsil slightly enlarged
Tonsil at cancer is caused by HPV, Human Papilloma Virus, most of the time. It is usually not painful and looks like grey clam in the side of your throat. Tonsils are susceptible to infection and accumulation of bacteria and their waste.
Recommend best person for diagnosis is a dentist, not an ENT.
I am a dental hygienist and see this cancer occasionally.
Hope this helps even though you posted this a while ago.