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Table 2 Acute and late pulmonary and cardiac adverse events

From: Dosimetric comparison between proton beam therapy and photon radiation therapy for locally advanced esophageal squamous cell carcinoma

  Grade1 Grade2 Grade3 Grade4-5
Acute toxicity
 Pneumonitis 7 (26%) 0 0 0
 Pericardial effusion 1 (4%) 0 0
Late toxicity
 Pneumonitis 17 (63%) 0 0 0
 Pleural effusion 5 (19%) 0 0 0
 Pericardial effusion 4 (15%) 0 0