Material and methods:
Allpatientsyounger than 25years,consecutively treated with PBTbased on a
multi-disciplinary tumor board decision were analyzed. Patients were
treated under daily on-board kilovoltage x-ray and/or cone beam CT scan
guidance. The demographic profile, treatment characteristics and the
acute toxicities were reported. Patient and treatment related factors
and their association with acute toxicities were analyzed using
univariate and multivariate analysis.