Should PMRT be offered for ypN0(i+) disease if only 1-2 nodes were removed in the post-chemotherapy SLNB and there is no plan for a completion AxLND?  

I favor PMRT although they were eligible for B-51 and called N0. Based on the surgical series, the risk of additional positive nodes is 15% to 57% (SN FNAC phase 2 study) and for that reason, treat with comprehensive PMRT.