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The 1-year cumulative probabilities were 70.6% and 21.5% for development of Grade 1 radiation-induced pneumonitis (RIP) and for continuing prolonged minimal RIP (pmRIP), respectively (a). The 1-year cumulative probabilities were 76.5% and 3.0% for development of Grade 1 radiation-induced pulmonary fibrosis (RIPF) and Grade 2 or worse RIPF, respectively (b).
