My mum recently had her routine mammogram and I’m really anxious

My mum recently had her routine mammogram and has now received a letter asking her to go back for some more tests.

I know being called back doesn’t automatically mean something is wrong, and I’ve read that this can happen because they want a closer look at something or need additional images, but I’m struggling not to worry about it.

I suffer with health anxiety, so my mind is obviously jumping to the worst-case scenario, even though I know there could be many completely harmless reasons she’s been called back.

Has anyone else in the UK had this happen after a routine breast screening? What happened when you went back for the additional tests?

I’m probably just looking for some reassurance and other people’s experiences while we wait for her appointment.