I am a 47 y/o breast cancer patient, stage 2a -- invasive ductal carcinoma (T2/N0/M0) -- tumor size 3.1 cm, ER+, PR+, and Her2-, BRCA1 -- variant L1844I, BRCA2 -- no mutation.
On April 24th, I underwent a lumpectomy on my right breast plus sentinel lymph node excision. My Oncotype DX score is 20, with a 12% average rate of recurrence. My breast surgeon recommends radiation followed by Tamoxifen. But my oncologist recommends chemo (4 cycles of Taxotere + Cytoxan) followed by radiation and Tamoxifen. Surgeon says at best, chemo would decrease my recurrence rate by only 3 to 5%. Oncologist can't give me any percentages -- says everyone is different, but since I'm relatively young and healthy (besides breast cancer), she thinks I'll tolerate chemo fairly well.
My mom was diagnosed with lung cancer 13 years ago (NonSmoker!) and had a horrible experience with chemo. I don't see the point of enduring chemo's devastating side effects unless it will likely decrease my breast cancer's recurrence rate. Since my Oncotype score of 20 is considered in the low intermediate range, should I seek a MammaPrint test for more definitive results? My oncologist hasn't offered this test. Should I get a second opinion and push for the MammaPrint?