Radiotherapy after more than a year of chemo and biologics

Sam0408

Hi, I am 47 years old and was diagnosed with breast cancer in March 2015. I had G3, ER/PR- and HER2+ breast cancer. Underwent mastectomy in March 2015 and had one lymph node removed which had one micro-metastasis and lymphangiosis carcinomatosa, followed by chemotherapy and started my HER2 inhibitors in Jul 2015. I just completed my HER2 inhibitors treatment in Jul 2016. I am at the moment considering the need of radiotherapy. I am aware that radiotherapy would usually follow after chemotherapy and since my chemotherapy ended in Oct 2015, would it be too late for radiotherapy? What are the benefits after more than a year of chemo and HER2 inhibitors? Would it still be worthwhile to do radiotherapy at this point?

Any thoughts