Please have a robust discussion with her doctors regarding the risks and benefits of treatment and it has to have an actual radiation oncologist explain the radiotherapy part as they’ll give you more accurate information than the pediatric oncologists will be able to.
I sincerely hope it all turns out well.
The role of radiation is to eliminate microscopic deposits of leftover cancer cells remaining in the breast to prevent local recurrence. The role of chemotherapy is to prevent cancer cells that may have already spread beyond the breast to other parts of the body from taking root and growing. Rule of thumb, most women who have a lumpectomy will be recommended to have radiotherapy. Many of those women will be recommended to have chemotherapy based on a. Number of factors including tumor size, lymph nodes, and receptor status.