Dr. Chen Qianjun’s answer: 1) The NCCN breast cancer guidelines in the United States strongly consider radiotherapy 2) The European ESMO guidelines do not include all people, but consider age (no specific data is provided, but it is generally considered to be 35 years old) , whether there is vascular tumor thrombus, and whether the number of lymph nodes dissected is too few (Europe usually considers less than 8, and the United States generally considers less than 10 as too few). 3) European st gallen breast cancer knowledge: Age should be considered. Radiotherapy is not required for those over 45 years old; vascular tumor thrombi should also be considered. If there are more than 2 locations, radiotherapy is required. According to European guidelines, you can indeed consider not having radiotherapy. However, I did not see the vascular tumor thrombus in your report.