Does Oncotype apply on young women with larger tumor size?

SoffeeH

Hi all, it's my first time post here!

It's been a month after my mastectomy, and I'm still struggling on my treatment plan, so would like to hear your thoughts!

I'm 39 yrs old, IDC, 2.9cm, Grade 2, ER+/PR+/HER2-, Node 0/2, LVI present. My Oncotype came back with a score of 16, and 4% of distance recurrence risk at 9 yrs with AI or TAM alone, and <1% Chemotherapy benefit. My MO wouldn't want me to do the Oncotype at first place since he thought my score would fall on the grey area (which it did), and he would still preferring me doing chemo anyway. After showing him my Oncotype score, he thought it's still necessary, only with lighter regimen (from ACx4+Tx4 to TCx4). I consulted another oncologist, he said no chemo with confidence, and thought using Tamoxifen with ovarian suppression would be good enough. I'm really stuck here! Since it's already 5 weeks after my surgery, I really don't want to missed the optimal time of initiating chemo if it's really necessary! Any advice or insights would be appreciated. Feel free to share if you have similar experience, thanks!!