[RADIATION-INDUCED TUMOR DEVELOPING AFTER RADIOSURGERY: WHAT ARE THE ODDS?]

Area of Science:

• Neurosurgery
• Radiation Oncology
• Oncology

Background:

• Stereotactic radiosurgery (SRS) is a minimally invasive technique for treating intracranial tumors, achieving over 90% tumor control.
• SRS is typically a single-session outpatient procedure with few transient side effects.
• Ionizing radiation, while effective, carries a known cancerogenic risk.

Observation:

• A case report details a glioblastoma multiforme developing at the site of previous SRS treatment for an arteriovenous malformation.
• This represents an exceedingly rare occurrence of secondary malignancy post-radiosurgery.

Findings:

• The study highlights a rare instance of secondary glioblastoma multiforme.
• This tumor originated precisely within the area previously targeted by stereotactic radiosurgery.

Implications:

• This case underscores the importance of long-term surveillance for patients treated with radiosurgery.
• Understanding the mechanisms of radiosurgery-induced tumorigenesis is crucial for refining treatment protocols.
• While rare, the potential for secondary tumors necessitates continued research into radiation's long-term effects.