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Sokolenko EA, Flühs D, Lalos F, Meyer P, Fiorentzis M, Lindziute M, Gemmecke J, Berchner-Pfannschmidt U, Hendgen-Cotta U, Bechrakis NE, Tsimpaki T, Dubicanac M, Wißmann A, Hilken G. Wolfram-silicone implants as effective radiation shielding for ocular brachytherapy: dosimetric features and in vivo animal study on biocompatibility. CANADIAN JOURNAL OF OPHTHALMOLOGY 2024; 59:e515-e524. [PMID: 38815956 DOI: 10.1016/j.jcjo.2024.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 03/18/2024] [Accepted: 04/14/2024] [Indexed: 06/01/2024]
Abstract
OBJECTIVE To evaluate wolfram as a photon and beta absorber in the management of uveal melanoma with radiotherapy, examining its potential ocular adverse effects and physiologic tolerance using an in vivo rabbit ocular model. METHODS A method of manufacturing implants from mixtures of wolfram and silicone was developed. Their shielding effect on the radiation of sources used in ocular brachytherapy was investigated by dosimetric measurement in an eye phantom as well as numerical simulations. Different wolfram implantation techniques, such as extraocular fixation of a wolfram-silicone implant (n = 1), vitrectomy with silicone oil and intravitreal injection of a wolfram-silicone oil suspension (n = 2), and concurrent attachment of a wolfram implant onto the sclera (n = 2), were tested to investigate the long-term effects of wolfram. A vitrectomy with silicone oil without wolfram implantation was carried out in 2 rabbits (n = 2), constituting the control group. The eyes were enucleated after 3 months for histologic analysis. RESULTS Wolfram-silicone mixtures have been dosimetrically proven to be very effective radiation absorbers for use in ocular brachytherapy. Severe complications, such as endophthalmitis, secondary glaucoma, cornea decompensation, and vessel occlusion, were not documented in the tested rabbit eyes after the application of wolfram. Histologic examination of the bulbi after enucleation showed epiretinal gliosis without further pathologic findings in all eyes after vitrectomy. CONCLUSIONS The results of this study show that wolfram and wolfram-silicone implants constitute a promising candidate as potential radiation shielding substrates.
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Affiliation(s)
- Ekaterina A Sokolenko
- Institute of Ophthalmology, University Eye Hospital, Hannover Medical School, Hannover, Germany.
| | - Dirk Flühs
- Department of Radiotherapy, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Fotis Lalos
- MVZ Private Clinic of Ophthalmology, Altenessen GmbH, Essen, Germany
| | - Peter Meyer
- Ophthalmology Department, University Hospital Basel, Basel, Switzerland
| | - Miltiadis Fiorentzis
- Department of Ophthalmology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Migle Lindziute
- Institute of Ophthalmology, University Eye Hospital, Hannover Medical School, Hannover, Germany
| | - Justine Gemmecke
- Department of Physics, Technical University Dortmund, Dortmund, Germany
| | | | - Ulrike Hendgen-Cotta
- West German Heart and Vascular Center, Clinic for Cardiology and Angiology, University Hospital Essen, Essen, Germany
| | - Nikolaos E Bechrakis
- Department of Ophthalmology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Theodora Tsimpaki
- Ophthalmology Department, University Hospital Basel, Basel, Switzerland
| | - Marko Dubicanac
- Central Animal Laboratory, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Andreas Wißmann
- Central Animal Laboratory, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Gero Hilken
- Central Animal Laboratory, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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Oare CC, Dailey JP, Gerbi B, Ferreira C. Novel intraocular shielding device for eye plaque brachytherapy using magnetite nanoparticles: A proof-of-concept study using radiochromic film and Monte Carlo simulations. Brachytherapy 2023; 22:769-778. [PMID: 37718143 DOI: 10.1016/j.brachy.2023.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 06/24/2023] [Accepted: 07/27/2023] [Indexed: 09/19/2023]
Abstract
PURPOSE Eye plaque brachytherapy is a mainstay treatment for uveal melanomas despite potential toxicities to normal tissues. This work proposes a nanoparticle ferrofluid as a novel intraocular shielding device. With a modified magnetic plaque, the shielding particles are drawn to the tumor surface, attenuating dose beyond the tumor while maintaining prescription dose to the target. METHODS AND MATERIALS Ferromagnetic nanoparticles suspended in a silicone polymer were synthesized to provide a high-density shielding medium. The ferrofluid's half-value layer (HVL) was quantified for 125I photons using radiochromic film and Monte Carlo methods. A magnetic COMS plaque was created and evaluated in its ability to attract ferrofluid over the tumor. Two ferrofluid shielding mediums were evaluated in their ability to attenuate dose at adjacent structures with in vitro measurements using radiochromic film, in addition to Monte Carlo studies. RESULTS The shielding medium's HVL measured approximately 1.3 mm for an 125I photon spectrum, using film and Monte Carlo methods. With 0.8 mL of shielding medium added to the vitreous humor, it proved to be effective at reducing dose to normal tissues of the eye. Monte Carlo-calculated dose reductions of 65%, 80%, and 78% at lateral distances 5, 10, and 18 mm from a tumor (5-mm apical height) in a modeled 20-mm COMS plaque. CONCLUSIONS The magnitude of dose reduction could reduce the likelihood of normal tissue side effects for plaque brachytherapy patients, including patients with normal tissues close to the plaque or tumor. Additional studies, safety considerations, and preclinical work must supplement these findings before use.
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Affiliation(s)
| | | | - Bruce Gerbi
- University of Minnesota Medical School, Minneapolis, MN
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Jarczak J, Karska-Basta I, Romanowska-Dixon B. Deterioration of Visual Acuity after Brachytherapy and Proton Therapy of Uveal Melanoma, and Methods of Counteracting This Complication Based on Recent Publications. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1131. [PMID: 37374335 DOI: 10.3390/medicina59061131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/30/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023]
Abstract
Uveal melanoma (UM) is the most common primary intraocular malignancy in adults. The eyeball is the most common extracutaneous location of melanoma. UM is a huge threat to a patient's life. It metastasizes distantly via blood vessels, but it can also spread locally and infiltrate extraocular structures. The treatment uses surgical methods, which include, among others, enucleation and conservative methods, such as brachytherapy (BT), proton therapy (PT), stereotactic radiotherapy (SRT), stereotactic radiosurgery (SRS), transpupillary thermotherapy (TTT) and photodynamic therapy. The key advantage of radiotherapy, which is currently used in most patients, is the preservation of the eyeball with the risk of metastasis and mortality comparable to that of enucleation. Unfortunately, radiotherapy very often leads to a significant deterioration in visual acuity (VA) as a result of radiation complications. This article is a review of the latest research on ruthenium-106 (Ru-106) brachytherapy, iodine-125 (I-125) brachytherapy and proton therapy of uveal melanoma that took into account the deterioration of eye function after therapy, and also the latest studies presenting the new concepts of modifications to the applied treatments in order to reduce radiation complications and maintain better visual acuity in treated patients.
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Affiliation(s)
- Jakub Jarczak
- Department of Ophthalmology, Division of Ophthalmology and Ocular Oncology, Faculty of Medicine, Jagiellonian University Medical College, 31-501 Krakow, Poland
- Jagiellonian University Medical College, Doctoral School of Medical and Health Sciences, 31-530 Krakow, Poland
| | - Izabella Karska-Basta
- Department of Ophthalmology, Division of Ophthalmology and Ocular Oncology, Faculty of Medicine, Jagiellonian University Medical College, 31-501 Krakow, Poland
| | - Bożena Romanowska-Dixon
- Department of Ophthalmology, Division of Ophthalmology and Ocular Oncology, Faculty of Medicine, Jagiellonian University Medical College, 31-501 Krakow, Poland
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Oare C, Sun S, Dusenbery K, Reynolds M, Koozekanani D, Gerbi B, Ferreira C. Analysis of dose to the macula, optic disc, and lens in relation to vision toxicities - A retrospective study using COMS eye plaques. Phys Med 2022; 101:71-78. [PMID: 35981450 DOI: 10.1016/j.ejmp.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 07/08/2022] [Accepted: 08/03/2022] [Indexed: 11/28/2022] Open
Abstract
PURPOSE The aim of this study was to relate common toxicity endpoints with dose to the macula, optic disc, and lens for uveal melanoma patients treated with Iodine-125 Collaborative Ocular Melanoma Study (COMS) eye plaque brachytherapy. METHODS A cohort of 52 patients treated at a single institution between 2005 and 2019 were retrospectively reviewed. Demographics, dosimetry, and clinical outcomes were recorded. Univariate, relative risk, and Kaplan-Meier analyses were performed to relate dose to toxicity endpoints including retinopathy, vision decline, and cataracts. RESULTS By the end of follow up (Median = 3.6 years, Range = 0.4 - 13.5 years), 65 % of eyes sustained radiation retinopathy, 40 % demonstrated moderate vision decline (>5 Snellen lines lost), and 56 % developed cataracts. Significant (p < 0.05) risk estimates exist for retinopathy and VA decline for doses >52 Gy to the macula and >42 Gy to the optic disc. Moreover, dose to the lens > 16 Gy showed a significant risk for cataract formation. Kaplan-Meier analysis demonstrated significantly different incidence of radiation retinopathy for > 52 Gy to the macula and > 42 Gy to the optic disc. In addition, the Kaplan-Meier analysis showed significantly different incidence of cataract formation for patients with lens dose > 16 Gy. CONCLUSIONS Dose-effect relationships exist for the macula and optic disc with respect to the loss of visual acuity and the development of retinopathy. To better preserve vision after treatment, further research is needed to reduce macula, optic disc, and lens doses while maintaining tumor control.
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Affiliation(s)
- Courtney Oare
- University of Minnesota Medical School, 420 Delaware St SE, MMC 494, Minneapolis, MN 55455, United States.
| | - Susan Sun
- University of Minnesota Medical School, 420 Delaware St SE, MMC 494, Minneapolis, MN 55455, United States
| | - Kathryn Dusenbery
- University of Minnesota Medical School, 420 Delaware St SE, MMC 494, Minneapolis, MN 55455, United States
| | - Margaret Reynolds
- University of Minnesota Medical School, 420 Delaware St SE, MMC 494, Minneapolis, MN 55455, United States
| | - Dara Koozekanani
- University of Minnesota Medical School, 420 Delaware St SE, MMC 494, Minneapolis, MN 55455, United States
| | - Bruce Gerbi
- University of Minnesota Medical School, 420 Delaware St SE, MMC 494, Minneapolis, MN 55455, United States
| | - Clara Ferreira
- University of Minnesota Medical School, 420 Delaware St SE, MMC 494, Minneapolis, MN 55455, United States
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García-O'Farrill N, Pugazhendhi S, Karth PA, Hunter AA. Radiation retinopathy intricacies and advances in management. Semin Ophthalmol 2021; 37:417-435. [PMID: 34874814 DOI: 10.1080/08820538.2021.2000623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Background: Radiation retinopathy is a chronic, progressive, vision-threatening complication from exposure to various radiation sources. While several treatment modalities are available, proper management for this disease is a continuing challenge with no consensus on the most efficacious.Objective: The aim of this article is to provide an updated review of the published literature on the course of the disease, available treatments and their efficacies, frequency of regimen, core issues in patient management, and additional newer treatment modalities, including possible prophylactic approaches.Value: We also highlighted the challenges encountered with managing chronically treated patients through an analysis of a clinical case report on a patient who was treated for several years with different modalities after a diagnosis of radiation retinopathy.
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Affiliation(s)
- Noraliz García-O'Farrill
- Oregon Eye Consultants, Eugene, OR, USA.,Department of Ophthalmology, School of Medicine, University of Puerto Rico Medical Sciences Campus, San Juan, PR, USA
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Radiobiological evaluation of organs at risk for electronic high-dose-rate brachytherapy in uveal melanoma: a radiobiological modeling study. J Contemp Brachytherapy 2021; 13:563-574. [PMID: 34759981 PMCID: PMC8565628 DOI: 10.5114/jcb.2021.110349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 08/23/2021] [Indexed: 11/17/2022] Open
Abstract
Purpose The objective of this study was to examine feasibility of single- or hypo-fraction of high-dose-rate (HDR) electronic brachytherapy (eBT) in uveal melanoma treatment. Material and methods Biologically effective doses (BED) of organs at risk (OARs) were compared to those of iodine-125-based eye plaque low-dose-rate brachytherapy (125I LDR-BT) with vitreous replacement (VR). Single- or hypo-fractionated equivalent physical doses (SFEDs or HFEDs) for tumor were calculated from tumor BED of 125I LDR-BT using linear-quadratic (LQ) and universal survival curve (USC) models. BED OARs doses to retina opposite the implant, macula, optic disc, and lens were calculated and compared among SFED, HFED, and 125I LDR-BT. Electronic BT of 50 kVp was considered assuming dose fall-off as clinically equivalent to 125I LDR-BT. All OARs BEDs were analyzed with and without silicone oil VR. Results For a single-fraction incorporating VR, the median/interquartile range of LQ (USC)-based BED doses of the retina opposite the implant, macula, optic disc, and lens were 16%/1.2% (33%/4%), 35%/19.5% (64%/17.7%), 37%/19% (75%/17.8%), and 27%/7.9% (68%/23.2%) of those for 125I LDR-BT, respectively. SFED tumor values were 29.8/0.2 Gy and 51.7/0.5 Gy when using LQ and USC models, respectively, which could be delivered within 1 hour. SFED can be delivered within 1 hour using a high-dose-rate eBT. Even four-fraction delivery of HFED without VR resulted in higher OARs doses in the macula, optic disc, and lens (135 ~ 159%) than when using 125I LDR-BT technique. A maximum p-value of 0.005 was observed for these distributions. Conclusions The simulation of single-fraction eBT, including vitreous replacement, resulted in significantly reduced OARs doses (16 ~ 75%) of that achieved with 125I LDR-BT.
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Considerations for Vitreoretinal Surgery in Eyes With Uveal Melanoma. Int Ophthalmol Clin 2020; 60:27-39. [PMID: 33093315 DOI: 10.1097/iio.0000000000000326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fallico M, Chronopoulos A, Schutz JS, Reibaldi M. Treatment of radiation maculopathy and radiation-induced macular edema: A systematic review. Surv Ophthalmol 2020; 66:441-460. [PMID: 32918934 DOI: 10.1016/j.survophthal.2020.08.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 02/06/2023]
Abstract
Radiation maculopathy and radiation-induced macular edema are common, sight-threatening complications after radiotherapy, especially that used for uveal melanoma. While many treatment and preventive strategies have been proposed, management of these conditions is still challenging. Initially, treatments were based on the use of retinal laser, but the outcomes were poor. Subsequently, management has shifted toward injection of intravitreal antivascular endothelial growth factor or corticosteroids. We reviewed current clinical evidence, which mostly relies on small sample-sized and retrospective studies, for the management of radiation maculopathy and, in particular, radiation-induced macular edema. At present, the first-line approach is usually intravitreal antivascular endothelial growth factor. Intravitreal dexamethasone implantation may be an option for those with suboptimal response or contraindications to antivascular endothelial growth factor agents. Possible preventive treatments that require future study are intravitreal bevacizumab and ranibizumab, peripheral laser photocoagulation, and subtenon triamcinolone acetonide.
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Affiliation(s)
- Matteo Fallico
- Department of Ophthalmology, University of Catania, Catania, Italy.
| | - Argyrios Chronopoulos
- Department of Ophthalmology, Hospital of Ludwigshafen, Ludwigshafen am Rhein, Germany
| | - James S Schutz
- Department of Ophthalmology, University Hospitals and School of Medicine, Geneva, Switzerland
| | - Michele Reibaldi
- Department of Surgical Sciences, Eye Clinic Section, University of Turin, Turin, Italy
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Lyons LJ, Hinds ED, Chexal S, Berger B. Silicone Oil and Iodine-125 Brachytherapy for Uveal Melanoma in High-Risk Patients. Cureus 2019; 11:e5270. [PMID: 31576263 PMCID: PMC6764640 DOI: 10.7759/cureus.5270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Purpose Silicone oil a burgeoning adjuvant in the treatment of uveal melanoma where it is used for tissue protection during I-125 brachytherapy. While risk factors in the development of radiation retinopathy (RR) have been identified, treatment modulation for high-risk patients has largely been overlooked. We seek to expand the literature on this subject by reporting outcomes of I-125 brachytherapy with silicone oil in a high-risk population in the community setting. Methods Five patients with uveal melanoma and at least one risk factor for RR development underwent iodine-125 (I-125) plaque brachytherapy with concurrent pars plana vitrectomy (PPV), silicone oil administration, and fine needle aspiration biopsy (FNAB). Plaque and silicone oil removal were performed after seven days. Minimum follow-up was 12 months. Results Follow-up ranged from 12 to 56 months. Macular radiation doses ranged from 12.55 to 141.5 Gy; the two eyes with the largest doses developed RR at 34 and 15 months as well as neovascular glaucoma (NVG). Surgical complications included one rhegmatogenous retinal detachment (RD) and an intra-operative vitreous hemorrhage with post-operative hyphema requiring additional intervention. Conclusion RR may be attenuated by silicone oil administration in patients with some risk factors. In tumors farther from the macula, this benefit is more readily apparent. Tumors located more posteriorly may not benefit from silicone oil administration considering postoperative complications and operating time. Patient demographics, tumor characteristics, and anticipated macular radiation dosage may help determine which patients can benefit from silicone oil and identify patient risks for adverse outcomes.
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Affiliation(s)
- Lance J Lyons
- Ophthalmology, University of Texas Medical Branch, Galveston, USA
| | - Ethan D Hinds
- Ophthalmology, University of Texas Medical Branch, Galveston, USA
| | - Sarada Chexal
- Ophthalmology, Retina Consultants of Austin, Austin, USA
| | - Brian Berger
- Ophthalmology, Retina Consultants of Austin, Austin, USA
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Delivered dose changes in COMS plaque-based ocular brachytherapy arising from vitrectomy with silicone oil replacement. Brachytherapy 2019; 18:668-674. [PMID: 31272841 DOI: 10.1016/j.brachy.2019.05.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/24/2019] [Accepted: 05/31/2019] [Indexed: 12/30/2022]
Abstract
PURPOSE The purpose of the study was to determine dosimetric effects of performing concurrent I-125 Collaborative Ocular Melanoma Study plaque brachytherapy and vitrectomy with replacement using silicone oil, previously shown to be a means of shielding uninvolved parts of the eye. METHODS AND MATERIALS Monte Carlo simulations using MCNP6 were performed to compare the dosimetry with all eye materials assigned as water, and for the vitreous (excluding the tumor), composed of polydimethylsiloxane oil for three generic, one large tumor, and two patient geometry scenarios. Dose was scored at the tumor apex, along the sclera, and within a 3D grid encompassing the eye. The assessed patient cases included vitrectomies to treat intraocular pathologies; not to enhance attenuation/shielding. RESULTS The doses along the sclera and for the entire eye were decreased when the silicone oil replaced the vitreal fluid, with a maximum decrease at the opposite sclera of 63%. Yet, absolute changes in dose to critical structures were often small and likely not clinically significant. The dose at the tumor apex was decreased by 3.1-9.4%. Dose was also decreased at the edges of the tumor because of decreased backscatter at the tumor-oil interface. CONCLUSIONS Concurrent silicone vitrectomy was found to reduce total radiation dose to the eye. Based on current radiation retinopathy predictive models, the evaluation of the absolute doses revealed only a subset of patients in which a clinically significant difference in outcomes is expected. Furthermore, the presence of the silicone oil decreased dose to the tumor edges, indicating that the tumor could be underdosed if the oil is unaccounted for.
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Yang YM, Chow PE, McCannel TA, Lamb JM. A comparison of the shielding effectiveness of silicone oil vitreous substitutes when used with Palladium-103 and Iodine-125 eye plaques. Med Phys 2018; 46:1006-1011. [PMID: 30554429 DOI: 10.1002/mp.13341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 11/11/2018] [Accepted: 12/06/2018] [Indexed: 12/26/2022] Open
Abstract
PURPOSE Episcleral eye plaques provide excellent local control of ocular melanoma, but vision sparing remains a significant problem with 30% or more of patients experiencing significant visual acuity degradation. The use of silicone oil shielding with Iodine-125 plaques has previously been reported to improve critical structure sparing. We hypothesized that the use of Palladium-103 would improve the shielding effectiveness of silicone oil due to the strong energy dependence of the photoelectric effect. This Monte Carlo simulation study reports a comparison of the shielding effects of silicone oil when used in conjunction with Pd-103 and with I-125 plaques. MATERIALS AND METHODS GEANT4 was used to simulate eye plaque treatments to an eye with either water-equivalent vitreous humor, or silicone oil in place of the vitreous humor. Two solid gold plaques, 15 and 23 mm, were simulated loaded with I-125 and with Pd-103 source seeds. Seed activity was normalized such that 85 Gy was delivered to the tumor apex in the water-equivalent cases. Tumor apex dose, central axis dose, and inner sclera dose reductions with silicone oil were evaluated. RESULTS Silicone oil resulted in an underdosing to the tumor apex of 6.1% and 7.5% in the 15 mm plaque for I-125 and Pd-103, respectively, and 3.4% and 4.3% in the 23 mm plaque for I-125 and Pd-103, respectively. When renormalized to 85 Gy to the tumor apex in all scenarios, silicone oil reduced the dose to the inner sclera 90° from the plaque by 19-32% for the 15 and 23 mm plaques using I-125, and by 33-65% for the 15 and 23 mm plaques using Pd-103. CONCLUSIONS The combination of silicone oil and Pd-103 eye plaques offers the potential for greatly improved sparing to normal structures compared to Pd-103 plaques alone or I-125 plaques with or without silicone oil.
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Affiliation(s)
- You M Yang
- University of California, Los Angeles, 200 Medical Plaza Ste B265, Los Angeles, CA, 90095, USA
| | - Phillip E Chow
- University of California, Los Angeles, 200 Medical Plaza Ste B265, Los Angeles, CA, 90095, USA
| | - Tara A McCannel
- Department of Ophthalmology, Stein Eye and Doheny Eye Institutes, University of California, 100 Stein PLZ, Los Angeles, CA, 90095, USA
| | - James M Lamb
- University of California, Los Angeles, 200 Medical Plaza Ste B265, Los Angeles, CA, 90095, USA
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Kim IK, Lane AM, Jain P, Awh C, Gragoudas ES. Ranibizumab for the Prevention of Radiation Complications in Patients Treated With Proton Beam Irradiation for Choroidal Melanoma. TRANSACTIONS OF THE AMERICAN OPHTHALMOLOGICAL SOCIETY 2016; 114:T2. [PMID: 27630373 PMCID: PMC5012854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
PURPOSE To investigate the safety and potential efficacy of ranibizumab for prevention of radiation complications in patients treated with proton irradiation for choroidal melanoma. METHODS Forty patients with tumors located within 2 disc diameters of the optic nerve and/or macula were enrolled in this open-label study. Participants received ranibizumab 0.5 mg or 1.0 mg at tumor localization and every 2 months thereafter for the study duration of 24 months. The incidence of adverse events, visual acuity, and other measures of ocular morbidity related to radiation complications were assessed. Historical controls with similar follow-up meeting the eligibility criteria for tumor size, location, and baseline visual acuity were assembled for comparison. RESULTS Fifteen patients with large tumors and 25 patients with small/medium tumors were enrolled. Thirty-two patients completed the month 24 visit. No serious ocular or systemic adverse events related to ranibizumab were observed. At 24 months, the proportion of patients with visual acuity ≥ 20/200 was 30/31 (97%) in the study group versus 92/205 (45%) in historical controls (P < .001). The proportion of patients with visual acuity ≥20/40 was 24/31 (77%) in the study group versus 46/205 (22%) in controls at 24 months (P<.001). Clinical evidence of radiation maculopathy at month 24 was seen in 8/24 (33%) patients with small/medium tumors versus 42/62 (68%) of controls (P = .004). Three patients with large tumors developed metastases. CONCLUSIONS In this small pilot study, prophylactic ranibizumab appears generally safe in patients treated with proton irradiation for choroidal melanoma. High rates of visual acuity retention were observed through 2 years.
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Affiliation(s)
- Ivana K Kim
- Massachusetts Eye and Ear, Retina Service, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Anne Marie Lane
- Massachusetts Eye and Ear, Retina Service, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Purva Jain
- Massachusetts Eye and Ear, Retina Service, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Caroline Awh
- Massachusetts Eye and Ear, Retina Service, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Evangelos S Gragoudas
- Massachusetts Eye and Ear, Retina Service, Department of Ophthalmology, Harvard Medical School, Boston, MA
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Tarlan B, Kıratlı H. Uveal Melanoma: Current Trends in Diagnosis and Management. Turk J Ophthalmol 2016; 46:123-137. [PMID: 27800275 PMCID: PMC5076295 DOI: 10.4274/tjo.37431] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 09/14/2015] [Indexed: 12/25/2022] Open
Abstract
Uveal melanoma, which is the most common primary intraocular malignancy in adults, arises from melanocytes within the iris, ciliary body and choroid. The diagnosis is based principally on clinical examination of the tumor with biomicroscopy and indirect ophthalmoscopy and confirmed by diagnostic techniques such as ultrasonography, fundus fluorescein angiography and optical coherence tomography. The clinical diagnosis of posterior uveal melanomas can be made when the classical appearance of a pigmented dome-shaped mass is detected on dilated fundus exam. Uveal melanomas classically show low to medium reflectivity on A-scan ultrasonography and on B-scan ultrasonography the tumor appears as a hyperechoic, acoustically hollow intraocular mass. Management of a suspicious pigmented lesion is determined by its risk factors of transforming into a choroidal melanoma, such as documentation of growth, thickness greater than 2 mm, presence of subretinal fluid, symptoms and orange pigment, margin within 3 mm of the optic disc, and absence of halo and drusen. Advances in the diagnosis and local and systemic treatment of uveal melanoma have caused a shift from enucleation to eye-conserving treatment modalities including transpupillary thermotherapy and radiotherapy over the past few decades. Prognosis can be most accurately predicted by genetic profiling of fine needle aspiration biopsy of the tumor before the treatment, and high-risk patients can now be identified for clinical trials that may lead to target-based therapies for metastatic disease and adjuvant therapy which aims to prevent metastatic disease.
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Affiliation(s)
| | - Hayyam Kıratlı
- Hacettepe University Faculty of Medicine, Department of Ophthalmology, Ankara, Turkey
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Afshar AR, Stewart JM, Kao AA, Mishra KK, Daftari IK, Damato BE. Proton beam radiotherapy for uveal melanoma. EXPERT REVIEW OF OPHTHALMOLOGY 2015. [DOI: 10.1586/17469899.2015.1120671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Taubenslag KJ, Kim SJ, Attia A, Abel TW, Nickols HH, Ancell KK, Daniels AB. Retinal metastasis from unknown primary: diagnosis, management, and clinicopathologic correlation. Digit J Ophthalmol 2015; 21:1-10. [PMID: 27330472 DOI: 10.5693/djo.02.2015.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A 75-year-old man was incidentally found to have a yellow-white retinal lesion with scattered hemorrhages. He was empirically treated elsewhere for viral retinitis without resolution and later transferred to the Vanderbilt Eye Institute, where retinal biopsy with silicone oil tamponade showed retinal metastasis. He had no prior history of cancer, and multiple systemic imaging evaluations failed to identify a primary site. Histopathology and immunohistochemistry of the biopsy were consistent with non-small-cell lung carcinoma. Due to the radiation-attenuating properties of silicone oil, the patient underwent silicone oil removal prior to receiving external beam radiotherapy (EBRT). The retinal metastasis responded completely to EBRT, and at final follow-up, 18 months after initial presentation, no primary tumor has been identified.
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Affiliation(s)
- Kenneth J Taubenslag
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Stephen J Kim
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Albert Attia
- Department of Radiation Oncology, Vanderbilt University Medical Center;; Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center
| | - Ty W Abel
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center;; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center
| | - Hilary Highfield Nickols
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center;; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center
| | - Kristin K Ancell
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center;; Medical Oncology, Department of Medicine, Vanderbilt University Medical Center
| | - Anthony B Daniels
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, Tennessee;; Department of Radiation Oncology, Vanderbilt University Medical Center;; Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center;; Department of Cancer Biology, Vanderbilt University, Nashville, Tennessee
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McCannel TA, McCannel CA. Iodine 125 Brachytherapy With Vitrectomy and Silicone Oil in the Treatment of Uveal Melanoma: 1-to-1 Matched Case-Control Series. Int J Radiat Oncol Biol Phys 2014; 89:347-52. [DOI: 10.1016/j.ijrobp.2014.02.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/29/2014] [Accepted: 02/12/2014] [Indexed: 02/03/2023]
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Houston SK, Ardila-Lonngi M, Markoe AM, Murray TG. Surgical management of posterior uveal melanoma: trends and developments. EXPERT REVIEW OF OPHTHALMOLOGY 2013. [DOI: 10.1586/17469899.2013.825150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Schefler AC, Abramson DH. Update on Ophthalmic Oncology 2012: Advances in Retinoblastoma and Uveal Melanoma. ASIA-PACIFIC JOURNAL OF OPHTHALMOLOGY (PHILADELPHIA, PA.) 2013; 2:119-31. [PMID: 26108049 DOI: 10.1097/apo.0b013e3182900492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The purpose of this article was to review the major advances in both translational and clinical research in 2 diseases, retinoblastoma and uveal melanoma, from November 2011 through October 2012. DESIGN Literature Review. METHODS A MEDLINE search was performed using the search terms "retinoblastoma" and "uveal melanoma." All relevant articles were reviewed, and articles with the most clinical relevance were reported. RESULTS In retinoblastoma, new clinical data are emerging every year regarding the safety and efficacy of intra-arterial chemotherapy as well as other even newer modalities such as intravitreal chemotherapy. Globe salvage rates for eyes without vitreous seeding approach 100% and are increasing to 80% for those with seeds with new methods of treatment. In uveal melanoma, our understanding of the genetic pathways underlying this disease is improving each day and leading to the initiation of clinical trials for adjuvant therapy and metastatic disease. CONCLUSIONS Ocular oncology is a small but dynamic field in which our knowledge is increasing every day. Exciting data emerged in the fields of both retinoblastoma and uveal melanoma this year.
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Affiliation(s)
- Amy C Schefler
- From the *Retina Consultants of Houston, Houston, TX; and †Memorial Sloan-Kettering Cancer Center, New York, NY
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Groenewald C, Konstantinidis L, Damato B. Effects of radiotherapy on uveal melanomas and adjacent tissues. Eye (Lond) 2012. [PMID: 23196647 DOI: 10.1038/eye.2012.249] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Most uveal melanomas are treated with radiotherapy. An adequate understanding of the effects of radiation on the tumour and the healthy ocular tissues is necessary. Ionizing radiation damages cell membranes, organelles, and DNA. Irradiated cells are lysed or undergo apoptosis, necrosis, and senescence. These effects occur in tumour cells and vascular endothelial cells, resulting in tumour shrinkage, ischaemia, infarction, exudation, and fibrosis, which can cause exudative maculopathy, serous retinal detachment, rubeosis, and neovascular glaucoma (ie, 'toxic tumour syndrome'). Such abnormalities must be distinguished from collateral damage to healthy ocular tissues that receive high doses of radiation, and these include radiation-induced retinopathy, optic neuropathy, choroidopathy, cataract, and scleral necrosis. Radiation retinopathy can be treated effectively with photodynamic therapy, anti-angiogenic agents, and intravitreal steroid injections. In some patients, optic neuropathy may improve with intravitreal steroids or anti-angiogenic agents. Neovascular glaucoma resolves with intra-cameral bevacizumab. Exudative retinal detachment can regress with intra-vitreal steroid injections. Cataract is treated in the usual manner. Scleral necrosis, if severe, may require grafting, possibly using a lamellar flap from the same eye. Depending on the bulk of the residual toxic tumour, treatment can consist of intra-vitreal steroids and/or anti-angiogenic agents, transpupillary thermotherapy or photodynamic therapy to the tumour, or surgical removal of the tumour by endo- or exo-resection. Measures aimed at preventing collateral damage include eccentric placement of ruthenium plaques or iodine seeds and delivery of a notched proton beam. The decision to treat a uveal melanoma with radiotherapy requires the ability to manage iatrogenic side effects and complications.
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Affiliation(s)
- C Groenewald
- Ocular Oncology Service, St Paul's Eye Unit, Royal Liverpool University Hospital, Liverpool, UK
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