I has a callback from a routine screening.
They had seen some microcalcifications - these are normal if they are scattered across the breast, but can be a concern if they are in a cluster.
I had a more detailed mammogram and an ultrasound, these can sometimes rule out concerns, but as they didn't for me, then I had a biopsy (I can tell you what that's like if you want)
Unfortunately the biopsy was inconclusive with some abnormal cells of unknown significance, full on cancer not likely but it could be DCS or some other pre-cancer. - genuinely inconclusive, as it could have also been innocent. So I had a second one done (leaving a marker behind just in case).
This showed no cancer cells, so no further treatment required . But I am on annual call back for the next 5 years.
They told me that of 1,000 women screened, 10 will get a call back. Of those 10 only 1 will need further investigation after the first mammo/ultrasound/biopsy. And even then only some of them will have a malignancy or pre-malignancy. Which isn't quite so reassuring once you're in the 10, let alone that 1, but although you can't help being anxious, it's really not time for panic stations