Marker Clip lost during surgery, but found at first annual mammogram & ultrasound

My titanium marker clip showed up at first mammogram and they said it had been left in so they could always see where the cancer had been. I didn't know it was there. 

I also had a radioactive seed inserted prior to surgery and that was removed 

I had four markers put in. I was told if I didn't need surgery they’d just stay in and not cause any problems. When I had a scan they couldn’t find one of them it was just very deep within the tissue. 

Just had my first annual mammogram and discovered that I have five clips in the affected breast, I had never been told this before and it's only because they asked me if I was ok to have an extra image taken to make sure all the clips could be seen when the mammogram is checked and avoid any recall.

At my year 6 I found I had about 10 marker clips.  No one had ever told me or shown me mammogram films !