Endoresection versus iodine-125 plaque brachytherapy for the treatment of choroidal melanoma.

PURPOSE

To compare the effectiveness of pars plana vitrectomy endoresection with iodine-125 brachytherapy in the treatment of choroidal melanoma.

DESIGN

A nested case-control study (1:2) from a surgical cohort.

METHODS

The study comprised 81 choroidal melanoma patients treated with either endoresection or iodine-125 brachytherapy. Twenty-seven patients who had undergone endoresection were matched according to tumor height and postequatorial tumor location with 54 cases treated with iodine-125 brachytherapy. Metastatic disease, overall survival, local tumor recurrence, visual acuity, and secondary enucleation rates were analyzed and compared between groups.

RESULTS

Metastatic spread was observed in 11 patients in the iodine-125 brachytherapy group vs only 1 patient in the endoresection group (20.4% and 3.7%, respectively, P = .053). Fourteen patients died during follow-up: 11 in the brachytherapy arm vs 3 in the endoresection arm (20.4% and 11.1%, respectively, P = .238). For the iodine-125 brachytherapy and endoresection groups, respectively, the 5-year Kaplan-Meier estimates were as follows: overall survival, 81.5% vs 89.2% (log-rank test, P = .429;); relapse-free survival, 96.6% vs 92.4% (P = .2); visual acuity retention equal or superior to 20/200, 66.4% vs 59.9% (P = .083), and eye retention, 85.7% vs 87.8% (P = .942).

CONCLUSIONS

Endoresection for choroidal melanoma is an effective treatment modality in selected cases of posterior choroidal melanomas, with outcomes similar to those obtained with iodine-125 brachytherapy.