@arpie, thank you so much. Those links did help. Before I found out I had this tumour I had no idea what it was. Never heard of it. When I started reading about it, I went: Hey! That's what I had! And now I feel like I could write my own book about it. Ah, the good old days! It does feel good in a way to have a diagnosis. I just had the feeling it wasn't a fibroadenoma...that, or a rogue fibro.
You have both really helped me already. These past few days have been a bit lonely. Most people have no clue about PT, and who's to blame them, but it means I'm going through a lot on my own.
It's been wrecking me emotionally, particularly thinking how it could come back and even worse than before, but I'm determined that will stop as much as it can by living one day at a time and being thankful for each day.