left breast, lumpectomy performed, clear margins, 1.7cm invasive ductal with "lobular characteristics", sentinel node biopsy
negative (1 node removed), bone and CT scans negative, stage I, grade II, oncotype RS=26, ER=9.3, PR=3.3, HER2=8.9
right breast, MRI identified microcalcifications and fibrious densities covering area approx 1.4cm, MRI guided biopsy with 12
samples determined to be benign.
chemotherapy decision: yes or no?