Radiation therapy for brain metastases.

Area of Science:

• Radiation Oncology
• Neuro-oncology
• Medical Physics

Background:

• Brain metastases management has become more complex due to increased patient life expectancy and frequent retreatment.
• Minimizing treatment-related side effects, particularly cognitive impairment, is a critical concern.
• Advances in imaging, radiation therapy technology, and systemic therapies necessitate updated treatment strategies.

Purpose of the Study:

• To present updated recommendations for radiation therapy in managing brain metastases.
• To highlight the shift towards modern radiation therapy techniques to improve outcomes and reduce toxicity.
• To address the complexities introduced by new prognostic classifications and systemic treatments.

Main Methods:

• Review and synthesis of recent advancements in radiation oncology and neuro-oncology.
• Analysis of evolving treatment paradigms, including stereotactic radiation therapy and intensity-modulated radiation therapy.
• Consideration of new prognostic factors, imaging, and systemic therapies in treatment planning.

Main Results:

• Stereotactic radiation therapy is increasingly preferred over whole-brain radiation therapy for both in-situ and post-surgical metastases.
• Intensity-modulated radiation therapy allows for hippocampus protection, aiming to preserve cognitive function.
• New systemic therapies complicate the integration and sequencing of radiation therapy, requiring multidisciplinary discussion.

Conclusions:

• Radiation therapy for brain metastases requires sophisticated technical approaches and personalized strategies.
• Minimizing cognitive side effects through techniques like hippocampus protection is a growing priority.
• Optimizing the timing and sequencing of radiation therapy with novel systemic treatments remains a challenging but crucial area for research and clinical practice.