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Updated: Jun 4, 2025
Stereotactic Radiosurgery for Gynecologic Cancer
Published on: April 17, 2012
Favorable Outcomes of Patients With High-Risk Uveal Melanoma Treated With a Novel Linear Accelerator-Based Frameless
Louis Cappelli1, Mehak M Khan2, Carol L Shields3
1Department of Radiation Oncology (L.C., M.S., H.L., Y.C., W.S.), Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Purpose:
Uveal melanoma (UM) represents the most prevalent and aggressive intraocular malignancy in adults. This study examined the outcomes of patients diagnosed with high-risk UM who underwent fractionated stereotactic radiosurgery (fSRS) treatment utilizing a novel Linear Accelerator (LINAC)-based frameless technique.
Design:
Retrospective, interventional case series.
Methods:
All patients received fSRS, 50 Gy in 10 Gy/fraction, every other day on a stereotactic LINAC with a novel in-house eye localization and monitoring system. Tumor control, vision outcome, as well as acute and late toxicities were evaluated.
Results:
This study included 23 patients with high-risk UM. Median age was 64.8 years old (range 37.9-85.1 years). The Median Karnofsky Performance Score was 90 (range 70-100). The median tumor diameter was 13.5 mm (range 3.0-24.0 mm), and median tumor thickness was 5.05 mm (range 1.2-15.1 mm). There were 11 patients (47.8%) who received prior episcleral plaque. The other 12 patients received stereotactic radiotherapy for initial treatment. With a median follow-up of 38 months, the local control rate was 95.6% at 1 year, 90.1% at 2 years, and 85.6% at 3 years. There was no significant difference between treatment-naïve patients and those who had previously received plaque treatment. Eye preservation rate was 91.3%, with 2 patients required enucleation for tumor progression and/or toxicity. High-grade acute adverse events included 1 patient with grade 3 eye pain. The median best-corrected visual acuity by LogMAR was 0.5 pretreatment (Snellen conversion 20/63) and 1.0 (Snellen 20/200) post-treatment.
Conclusions:
Our institution's novel LINAC-based frameless fSRS demonstrated favorable local control and toxicity profile for high-risk UM (tumors deemed unsuitable for episcleral plaque brachytherapy). Patients maintained a high rate of eye preservation. This approach provides an eye preservation option for patients unable to have plaque radiotherapy.
