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- W3142721231 abstract "External beam radiotherapy (EBR) remained for a long time the only method of treatment in children with recurrent and resistant retinoblastoma (RB). This method often leads to serious complications, including the occurrence of secondary malignant tumors. Currently, EBR is used as second-line (salvage) therapy. There is no data in the literature of using Gamma Knife stereotactic radiosurgery (GKRS) in RB treatment. Purpose. To present 5-year experience of using GKRS in patients with RB. Material and methods. 16 children (17 eyes) were treated using GKRS in the period from 2015 to 2019. Mean patient age was 34.7 months (range, 12–114 months). The eyes were classified as group B (n=4), C (n=1), D (n=12). 3 children had the last eye. All patients received systemic and local chemotherapy, all types of local treatment modalities before using GKRS. Recurrent and resistant RB was the indication for GKRS. Marginal 50% mean dose was 22 Gу (range, 20–24 Gу), depending on tumour type and location. Radiation doses were evaluated accounting critical eye structures and the orbit bones. Results. Complete regression was achieved in 11 patients, partial in 2. Four patients underwent enucleation after GKRS. Indications for enucleation were retinoblastoma recurrence (n=2) and vitreous hemorrhage with total retinal detachment (n=2). 13 eyes were salvaged with no signs of keratopathy, uveitis or damage of orbital and surrounding tissues during mean follow-up 30.6 months (range, 7–60 months). Сomplications of different severity occurred in 13 patients, including vitreous hemorrhage in 6 patients, which was successfully treated both conservative (n=3) and using pars plana vitrectomy with simultaneous melphalan irrigation (n=3). Conclusion. The first experience of GKRS as an alternative to enucleation in patients with RB was proved to be reasonable and successful. Key words: retinoblastoma, gamma-knife, stereotactic radiosurgery." @default.
- W3142721231 created "2021-04-13" @default.
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- W3142721231 date "2021-03-20" @default.
- W3142721231 modified "2023-09-27" @default.
- W3142721231 title "Gamma Knife stereotactic radiosurgery for intraocular retinoblastoma: a 5-year experience" @default.
- W3142721231 doi "https://doi.org/10.25276/0235-4160-2021-1-46-56" @default.
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