Seniors

The medical technology/equipment used today allows doctors to see a lot of things they never would have seen years ago. And a lot of what they see is harmless/normal/no big deal. But there is a lot of "defensive medicine" going on these days too. Once they see something, they feel the need to check it out thoroughly. And you would be surprised how often it turns out to be nothing.
But I definitely get it and understand your anxiety. I've been there and when the "small lesion" turned out to be nothing I wanted those terrifying two weeks of my life back!! I know many people who have had similar experiences...including my own doctor who told me she was told there was a "mass" seen on her liver after some kind of scan. She told me when they told her she started yelling "What? What the hell are you talking about?" and then it turned out to be nothing! (Love my doctor for being so honest).
Hang it there.