Fig. 3.

The images of diagnostic CT of radiation-induced esophageal perforation. A The diagnostic image. The patient was urgently hospitalized 18 days before death due to a fever and developed paraplegia 12 days before death. The image shows esophageal perforation, mediastinitis, and spinal cord compression due to an epidural abscess. B Dose distribution of re-irradiation SBRT on the fused-CT image (same CT as Fig. 2A). C Dose distribution of initial EBRT on the fused-CT image (same CT as Fig. 2A). CT computed tomography, SBRT stereotactic body radiation therapy, EBRT external beam radiation therapy