Dear Mags44: The benefit of chemotherapy in women in their 60's with negative nodes may be modest. You should discuss with your oncologist, based on your information, the risk for recurrence with (and without) chemotherapy. Oncologists have ways of calculating this information. Once you have the information regarding how much benefit there is likely to be for you, you will be better able to make the decision if you think that this benefit is worth the risks.
sorry my tumor was 1.3 cm not mm.