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Published on: January 25, 2015
Gamma knife radiosurgery for uveal melanoma: 12 years of experience
G Modorati1, E Miserocchi, L Galli
1Department of Ophthalmology, San Raffaele Scientific Institute, Milan, Italy, Via Olgettina 60, 20132 Milan, Italy. modorati.giulio@hsr.it
Aim:
To present our treatment protocol and evaluate the results of Gamma knife radiosurgery (GKR) in treating patients with uveal melanoma.
Methods:
Seventy-eight consecutive patients with uveal melanoma underwent stereotactic radiosurgery (radiation dose 30-50 Gy) with a Leksell Gamma-Knife at the San Raffaele University Hospital, Milan, Italy between 1994 and 2006. The main outcome measures evaluated were: survival rate, local tumour control, eye retention rate, visual acuity and treatment-related complications.
Results:
Survival rate was 88.8% at 3 years and 81.9% at 5 years. Local tumour control was achieved in 91.0% of patients. The median tumour thickness reduction after treatment was 1.96 mm (p<0.0001) (-32.1%). The eye retention rate was 89.7%. A significant relative reduction of visual acuity was observed during follow-up. The most frequent treatment-related complications were: exudative retinopathy (33.3%), neovascular glaucoma (18.7%), radiogenic retinopathy (13.5%) and vitreous haemorrhages (10.4%).
Conclusion:
GKR can be considered an alternative to enucleation for the treatment of choroidal melanomas.
