Proton therapy is useful for cancers that have not spread and for tumors that are located near organs or other structures that are sensitive to radiation.

• Brain Tumors – decreased volume of uninvolved brain receiving radiation
• Breast (especially left side) – reduced radiation dose to the heart
• Lung – less radiation dose to uninvolved lung and heart
• Lymphoma (in the chest) – decreased radiation to lungs and heart
• Pediatric cancers – reduced radiation to growing organs
• Prostate – decreased radiation to the rectum, bladder and surrounding pelvis
• Select head and neck, bone and muscle, and abdominal cancers
• Spine tumors – decreased volume of uninvolved spine receiving radiation