•
No clear evidence:
lymphoma, non-small cell lung
cancer, head-and-neck cancer, rectal cancer, pancreatic
cancer
De Ruyssscher et al.
Radiother Oncol
103 : 5, 2012; Allan et al.
Radiother Oncol
103 : 8, 2012; DEGRO website
Guidelines for proton therapy: ESTRO/ASTRO