I was just rereading the letter I received after my breast clinic appointment.

It says "no abnormalities felt in the breast or axilla and mammogram M2/M2.  I understand that M2 means benign lesions, what does M2/M2 mean or is that typos?  Ultrasound is a U4 lesion in the sub areolar which I understand to mean they think its cancer but are not quite sure.

Please could you confirm that I have understood this correctly.  Thank you.