Can the addition of posterior axillary boost (PAB) for breast cancer increase the risk of brachial plexopathy?

In the era of 3D volume based planning, it is important to contour the nodal regions and optimize coverage to the volume. In the 2D era, people use to prescribe to mid axilla and a PAB was commonly used. We know now that axillary nodes are far more anterior then that. To cover these nodes, we use an...