Oropharyngeal cancer incidence is rapidly increasing in young people likely due to Human Papilloma Virus infection. I wouldn't be surprised if his tumor was precipitated by HPV. Hopefully, deaths like this will be a thing of the past with the introduction of the HPV vaccine in young people. RIP.
"Be of good comfort, Master Ridley, and play the man! We shall this day light such a candle, by God's grace, in England, as I trust shall never be put out."
--Hugh Latimer, October 16, 1555