Wow, thats interesting. As mine was completly missed 19mm, they only picked up I had BC as DCIS showed on Mamogram. My ultrsound came back clear!. The mixed mucinous was only identified after my bilateral mastectomy, which I opted for as there is some family history. I had 4 x TC, then was on Tamoxifen. Again I had a check up at Oncology, which was all good, then one week later check up with surgical which was different department who picked up the enlarged lymph nodes. I keep thinking if I had missed that second appointment I would have been none the wiser! I have a different Oncologist now, who is very onto everything. Thank you for sharing..