Would you recommend covering the dissected axilla in your radiation field in patients with cN2/N3 disease who had complete response to neoadjuvant chemo and an ALND? 

It has been my practice to cover the dissected axilla in these cases with cN2/3 disease, even with a pCR and ALND. I have not seen huge volume reductions when you plan with 3D-CRT and have tangents and an AP SCV field, so Im not sure how much you gain in terms of volume irradiated and potential toxi...

One additional measure I take is to compare the pre chemo scan to the planning scan, and any potential residual node at any level in axilla or IM which is not dissected would boost to a higher dose.