Multisession CyberKnife Radiosurgery for Orbital Cavernous Hemangiomas.

Area of Science:

• Ophthalmology
• Neurosurgery
• Radiation Oncology

Background:

• Orbital cavernous hemangiomas are rare, benign tumors causing proptosis and reduced visual acuity.
• Surgical resection, the primary treatment, is often challenging due to orbital anatomy.
• Stereotactic radiosurgery (SRS) is an established alternative for complex skull base microsurgeries.

Observation:

• Five patients with orbital cavernous hemangioma were treated with multisession CyberKnife stereotactic radiotherapy.
• Tumor volumes ranged from 0.2 cc to 11.9 cc and showed size reduction post-treatment.
• Radiation doses were between 24 Gy and 26.1 Gy, delivered in 5 or 6 fractions.

Findings:

• All five cases demonstrated successful treatment outcomes.
• Tumor volume decreased significantly following CyberKnife radiotherapy.
• Visual acuity was preserved in all patients throughout the treatment period.

Implications:

• Multisession CyberKnife radiotherapy presents a viable, safe, and effective treatment option for orbital cavernous hemangioma.
• This non-invasive approach may be particularly beneficial for cases where surgical resection is high-risk.
• Further research can explore long-term outcomes and optimal fractionation schedules for this treatment modality.