Highly aggressive triple negative breast cancer

DallasCowboysFan

Hi. I was diagnosed with stage 3b, triple negative bc. I was told it was highly aggressive. I at first let it go because i thought it was a cyst. I had this tumor for well over a year, and then it ulcerated on my skin. They did a mastectomy, and said the tumor took up over 75% of my breast. Pathology is back and out of 12 lymph nodes zero are affected and no vascular invasion, which is wonderful news, but what are the chances of that? Seems odd to me, and my sister that is a nurse said that any kind of highly aggressive cancer, especially triple neg and that size is next to impossible not to be in one or both of those, and the surgeon seemed confused. What do you make of this? Have you ever heard of that? Wondering if maybe this was actually a benign tumor that i let go so far that it was hard to tell what it actually was