What dose-fractionation do you use for recurrent SCC (face) that was previously multiply resected and radiated, but has a persistently positive margin after re-resection?

Either 64 Gy at 2 Gy per QD fraction or 64.8 Gy at 1.2 Gy bid. I would electively treat treat the nodes if not previously irradiated. If nodes were previously irradiated, I would not.