A friend of mine has been told that she has invasive breast cancer with high grade DCIS picked up by a routine mammogram. Apparently treatment is cutting out the relevant parts and then radiotherapy. I have tried to look up information but am confused as I can only find information that relates to non-invasive breast cancer with DCIS. Please can someone explain this to me or point me in the right direction of explanations. Is this in fact 2 different types of cancer? I am petrified for her and feel so sick. Thanks in advance.