I would guess since the anatomical location is very typical for a viral cause cancer, and she is a never smoker - non drinker, this can be assumed. Tonsillar cancers were not very common until the days of the virus made them a prime target. They may soon surpass tongue cancers in incidence.

Brian, stage 4 oral cancer survivor. OCF Founder and Director. The first responsibility of a leader is to define reality. The last is to say thank you. In between, the leader is a servant.