If you have a history of worrying about cancer or cancer re-occurrence as I do, I'd play along with the doctor. That is, if you have a really good, trusting relationship with him/her as you should.
If you don't, get a second opinion from a specialist. Or get a second opinion anyway. Have the new doc get the records/results from the current doc, and
let them do the worrying for you. Stay away from the web. Follow the process.
Life is too short to worry about this stuff. The docs are lawsuit-averse enough they won't let this get out of control. Two docs on the job will give you the peace of mind you want without micro-managing.
Just my opinion as cancer survivor and ex-hypochondriac who is in a much better place now
