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Published on: January 25, 2015
Reduced melanoma-related mortality in uveal melanoma by preenucleation radiotherapy
Emine Kilic1, Theo Stijnen, Paulus T V M de Jong
1Department of Ophthalmology, Erasmus MC, Rotterdam, the Netherlands.
Background:
Radiotherapy of an eye before enucleation, so called preenucleation radiotherapy (PER), of patients with uveal melanoma was initiated to reduce enucleation-induced systemic metastasis. Earlier studies with a short follow-up period have not demonstrated a significant effect on survival.
Objective:
To study the effect of PER on melanoma-related mortality after more than 9 years of follow-up.
Design:
In a prospective study, 167 patients with uveal melanoma were treated between 1978 and 1992 by irradiation with 800 rad (8 Gy) given in 2 fractions 2 days before enucleation. A group of 108 patients with uveal melanoma treated between 1971 and 1992 by enucleation only in the same hospital served as a historical control group. Patients were followed up until December 2002 or death.
Results:
Melanoma-related death occurred in 32.3% of the PER-treated group and in 40.7% of the enucleation only group. Mean follow-up was 9.25 years. After 48 months of follow-up, a significant difference in survival became evident in favor of the PER group. The estimated 15-year survival rates for patients with melanoma in the PER group and enucleation only group were 63.7% and 51.0%, respectively. For patients dying of all causes, these percentages were 47.5% and 25.2%, respectively. In both groups, women had a better prognostic outcome than men.
Conclusion:
This study suggests that PER improves long-term survival in patients with uveal melanoma.
