For the RO, Dosimetrist it takes more calculations, treatment planning, and would only be offered if it can be done, and done safely. For the patient, being reirridated can difficult, but depends on the prior radiation, type of radiation, areas to be reirridated, unradiated tissue from flaps, dosage, other issues, but it's never easy the 2nd time around, including emotionally, besides physically. Usually it is reduced radiation in more isolated areas, but woud say it usually is over 50Gy to kill SCC.

Good luck.