Call back 24 hours after mammogram

Hi everyone. I was referred by my GP to the breast clinic with intermittent breast pain and an inverted nipple. I had my mammogram yesterday, afterwards I was told I'd receive the results and a follow up appointment in a week or two. They phoned me this morning to ask me to come back in Wednesday to see a consultant. 

Just wondering what other people's experiences were as in my experience asking me to come back so quickly usually means they have seen something and want to investigate.