For a patient with an ER-positive, pT1c breast cancer who otherwise meets criteria for APBI, but has a BMI of 50 with pendulous breasts and N1mi disease, how would you approach adjuvant radiation treatment?
To what extent do you feel there would be a compromise in local control with partial breast in this clinical scenario, and do you feel that would outweigh any decrease in toxicity afforded by APBI?