Survivor since 2007
I don't think this is all that uncommon. I remember my mastectomy was late because the woman before me ended up with a mastectomy and axillary lymph node dissection. Tests can only show so much and things can change once the surgeon starts the actual surgery. It is a shock to wake up and discover things didn't go as expected. My surgeon told me my 5 sentinal nodes were clear. After the actual complete pathology was done, one of the nodes had a small area of cancer and my diagnosis went from a 2A to a 2B.
I was pretty upset. This probably happens a lot more than one would think.
Take care, Sharon