Proton Therapy for Head and Neck Cancers.

Area of Science:

• Medical Physics
• Radiation Oncology

Background:

• Proton therapy offers dosimetric advantages due to its sharp lateral penumbra and steep distal fall-off.
• Historically used for skull-base tumors, its application in head and neck cancers has expanded.
• Expanded applications include nasopharynx, oropharynx, nasal cavity, paranasal sinuses, periorbital, skin, salivary gland tumors, and reirradiation.

Purpose of the Study:

• To review the physical properties and dosimetric benefits of proton therapy versus advanced photon therapy.
• To summarize the clinical benefits of proton therapy for various head and neck cancer sites.
• To discuss patient selection criteria and cost-effectiveness of proton therapy.

Main Methods:

• Literature review of physical properties and dosimetric data.
• Synthesis of clinical outcomes from studies on various head and neck cancer sites.
• Analysis of patient selection factors and economic evaluations.

Main Results:

• Proton therapy demonstrates superior dose distribution, reducing radiation exposure to surrounding healthy tissues.
• Evidence suggests clinical benefits in multiple head and neck cancer sites, including improved outcomes and reduced toxicity.
• Key considerations for implementation include patient selection and cost-effectiveness analysis.

Conclusions:

• Proton therapy presents significant dosimetric and potential clinical advantages for head and neck cancer treatment.
• Further research and careful patient selection are crucial for optimizing its use and addressing cost concerns.