Positive Posterior Margin in Mastectomy specimen

So, long story short, had a patient who had low-risk early stage breast cancer clinically, underwent mastectomy + SLNB, saw one positive lymph node, and did ALND. pT1bN1a, with a positive posterior margin (at ink of mastectomy specimen, not within 2mm or anything). Received adjuvant chemo and now there was discussion of whether PMRT was indicated (patient had immediate implant based recon before positive posterior margin was known) The surgeon said that a positive posterior margin doesn't... Positive Posterior Margin in Mastectomy specimen
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums