I've seen a bunch of guys with suspicious MRIs that do NOT end up having cancer. And...
I'm one of those.
Take a deep breath, Crazy Lady, slow down.
There's a lot to learn.
Read this link carefully, then read it again.
There is a ton of information in that link that can be hard to digest all at once.
Take your time, you likely have plenty of time to digest the info and determine the best course for you and your husband.
Hope things go well for you guys.