Do you offer partial breast irradiation to women with tumors infiltrating the dermis (not epidermis) who otherwise fall in the "suitable" ASTRO category?  

I have not done APBI in a situation like this.

All the randomized trials in APBI suggested that it is more beneficial for low-risk patients, i.e., the SUITABLE in the ASTRO guidelines or very simply the T1No ER+, >50 years old. With a dermal infiltration, it could be an area not receiving the full dose and the patient is not a low risk anymor...