How do you approach positioning and irradiation of breast cancer in accessory breast tissue in the axilla? If the accessory breast tissue extends into the arm, how would you position/immobilize the arm?

What if this lesion was at the top of the hair bearing skin of the axilla?

Answer from: Radiation Oncologist at Community Practice

Last patient I treated, I used a breast board with vacuum bag to immobilize arm for reproducibility as I had to treat the breast plus regional nodes.