Well, we got some more fun news in cancer land this week. My oncologist called on Monday, and she informed me that between my first biopsy when I was diagnosed in May and when they took the tumor out of me in October, the composition of my tumor changed, at a cellular level. As a reminder, when I was first diagnosed, my tumor was estrogen receptor positive, progesterone receptor negative, and HER-2 negative.* Well, during chemo, turns out it morphed into an estrogen receptor positive AND a HER-2 positive tumor. This type of evolution is pretty rare. Generally speaking, rare in the world of cancer is not great, because there's not a lot of tried and true methods to follow. But more on that later. First, what does this actually mean in terms of my treatment and prognosis? HER-2 positive tumors tend to be more aggressive, i.e. faster growing, faster spreading, with a higher risk of recurrence ( that's bad ). But for the last 10-ish years, there has been an immunotherapy drug us...