<i>Purpose</i> - To provide additional clinical data about the re-irradiation tolerance of the spinal cord.<br><br> <i>Methods</i> - This was a retrospective bi-institutional study of patients re-irradiated to the cervical or thoracic spinal cord with minimum follow-up of 6 months. The maximum dose (Dmax) and dose to 0.1cc (D0.1cc) were determined (magnetic resonance imaging [MRI]-defined cord) ...