Preoperative Stereotactic Radiosurgery for Brain Metastases

Area of Science:

• Neurosurgery
• Radiation Oncology
• Oncology

Background:

• Postoperative stereotactic radiosurgery (SRS) is a standard treatment for resected brain metastases, improving local control and preserving neurocognitive function.
• Despite current standards, local recurrence rates can reach 40%, with risks of leptomeningeal disease.
• Improved treatment strategies are needed to enhance efficacy and minimize toxicity.

Purpose of the Study:

• To explore the potential benefits and risks of preoperative SRS compared to postoperative SRS for brain metastases.
• To review existing literature on preoperative SRS outcomes for brain metastases.

Main Methods:

• Review of current literature on preoperative versus postoperative SRS for brain metastases.
• Analysis of potential advantages of preoperative SRS, including improved contouring, reduced intraoperative seeding, and decreased risk of leptomeningeal disease.
• Evaluation of potential toxicity profile differences, specifically symptomatic radiation necrosis.

Main Results:

• Preoperative SRS allows for precise contouring of intact metastases.
• Potential for decreased intraoperative tumor cell seeding and reduced risk of leptomeningeal disease with preoperative SRS.
• Possible reduction in symptomatic radiation necrosis due to targeted treatment of the intact tumor before resection.

Conclusions:

• Preoperative SRS presents a promising alternative strategy for managing brain metastases.
• Further research and clinical trials are warranted to establish the role of preoperative SRS in optimizing outcomes for brain metastases.
• Preoperative SRS may offer improved tumor control and a potentially reduced toxicity profile compared to postoperative SRS.