I read each day of skipping radiation is like lowering survival rate by 1 percent due to the cancer repopulating, and after the first two to three weeks of radiation, it becomes less effective anyway, and why it's done in 6-7 weeks, in fractions, boosts and other means. Although, they can still tack on the missed days, it's not the same, if unplanned, and longer radiation is not necessarily better for HNSCC, so it's important not to miss any days, and to complete treatment as planned.
