Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 39
Filtrar
Más filtros

Banco de datos
Tipo del documento
Intervalo de año de publicación
1.
Ophthalmology ; 127(2): 240-248, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31708274

RESUMEN

PURPOSE: Cutaneous melanoma metastatic to the vitreous is very rare. This study investigated the clinical findings, treatment, and outcome of patients with metastatic cutaneous melanoma to the vitreous. Most patients received checkpoint inhibition for the treatment of systemic disease, and the significance of this was explored. DESIGN: Multicenter, retrospective cohort study. PARTICIPANTS: Fourteen eyes of 11 patients with metastatic cutaneous melanoma to the vitreous. METHODS: Clinical records, including fundus photography and ultrasound results, were reviewed retrospectively, and relevant data were recorded for each patient eye. MAIN OUTCOME MEASURES: Clinical features at presentation, ophthalmic and systemic treatments, and outcomes. RESULTS: The median age at presentation of ophthalmic disease was 66 years (range, 23-88 years), and the median follow-up from diagnosis of ophthalmic disease was 23 months. Ten of 11 patients were treated with immune checkpoint inhibition at some point in the treatment course. The median time from starting immunotherapy to ocular symptoms was 17 months (range, 4.5-38 months). Half of eyes demonstrated amelanotic vitreous debris. Five eyes demonstrated elevated intraocular pressure, and 4 eyes demonstrated a retinal detachment. Six patients showed metastatic disease in the central nervous system. Ophthalmic treatment included external beam radiation (30-40 Gy) in 6 eyes, intravitreous melphalan (10-20 µg) in 4 eyes, enucleation of 1 eye, and local observation while receiving systemic treatment in 2 eyes. Three eyes received intravitreous bevacizumab for neovascularization. The final Snellen visual acuity ranged from 20/20 to no light perception. CONCLUSIONS: The differential diagnosis of vitreous debris in the context of metastatic cutaneous melanoma includes intravitreal metastasis, and this seems to be particularly apparent during this era of treatment with checkpoint inhibition. External beam radiation, intravitreous melphalan, and systemic checkpoint inhibition can be used in the treatment of ophthalmic disease. Neovascular glaucoma and retinal detachments may occur, and most eyes show poor visual potential. Approximately one quarter of patients demonstrated ocular disease that preceded central nervous system metastasis. Patients with visual symptoms or vitreous debris in the context of metastatic cutaneous melanoma would benefit from evaluation by an ophthalmic oncologist.


Asunto(s)
Antineoplásicos Alquilantes/uso terapéutico , Neoplasias del Ojo/tratamiento farmacológico , Neoplasias del Ojo/secundario , Inmunoterapia/métodos , Melanoma/patología , Melfalán/uso terapéutico , Neoplasias Cutáneas/patología , Cuerpo Vítreo/patología , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Adulto Joven , Melanoma Cutáneo Maligno
3.
Proc Natl Acad Sci U S A ; 110(16): 6269-74, 2013 Apr 16.
Artículo en Inglés | MEDLINE | ID: mdl-23576757

RESUMEN

The release of cytochrome c from mitochondria is a key signaling mechanism in apoptosis. Although extramitochondrial proteins are thought to initiate this release, the exact mechanisms remain unclear. Cytochrome c (cyt c) binds to and penetrates lipid structures containing the inner mitochondrial membrane lipid cardiolipin (CL), leading to protein conformational changes and increased peroxidase activity. We describe here a direct visualization of a fluorescent cyt c crossing synthetic, CL-containing membranes in the absence of other proteins. We observed strong binding of cyt c to CL in phospholipid vesicles and bursts of cyt c leakage across the membrane. Passive fluorescent markers such as carboxyfluorescein and a 10-kDa dextran polymer crossed the membrane simultaneously with cyt c, although larger dextrans did not. The data show that these bursts result from the opening of lipid pores formed by the cyt c-CL conjugate. Pore formation and cyt c leakage were significantly reduced in the presence of ATP. We suggest a model, consistent with these findings, in which the formation of toroidal lipid pores is driven by initial cyt c-induced negative spontaneous membrane curvature and subsequent protein unfolding interactions. Our results suggest that the CL-cyt c interaction may be sufficient to allow cyt c permeation of mitochondrial membranes and that cyt c may contribute to its own escape from mitochondria during apoptosis.


Asunto(s)
Apoptosis/fisiología , Cardiolipinas/metabolismo , Citocromos c/metabolismo , Membranas Mitocondriales/metabolismo , Transducción de Señal/fisiología , Fluorescencia , Microscopía Confocal , Modelos Biológicos , Permeabilidad , Electricidad Estática
4.
Pancreas ; 53(5): e445-e449, 2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38530952

RESUMEN

ABSTRACT: Neuroendocrine tumors (NETs) are rare cancers with heterogeneous histologies, response to treatments, and prognoses. Majority of these cancers originate in the gastrointestinal tract and metastasize to the liver. We report the cases of 5 patients with low-grade NET disease with rare metastases to the choroids. Two of the patients were treated with peptide receptor radionuclide therapy (lutetium 177 [ 177 Lu]). This is the first report confirming peptide radionuclide therapy safety in patients with low-grade NET with ocular metastases.


Asunto(s)
Neoplasias de la Coroides , Tumores Neuroendocrinos , Neoplasias Orbitales , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias de la Coroides/secundario , Neoplasias de la Coroides/radioterapia , Lutecio/uso terapéutico , Tumores Neuroendocrinos/radioterapia , Tumores Neuroendocrinos/secundario , Tumores Neuroendocrinos/patología , Neoplasias Orbitales/secundario , Neoplasias Orbitales/radioterapia , Radioisótopos/uso terapéutico , Radiofármacos/uso terapéutico , Receptores de Péptidos/metabolismo , Resultado del Tratamiento
5.
Retin Cases Brief Rep ; 18(1): 51-58, 2024 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-36007192

RESUMEN

PURPOSE: To report 6 cases of diffuse choroidal hemangioma in children treated with iodine-125 plaque brachytherapy at a single tertiary care center. METHODS: Retrospective case series. RESULTS: Six pediatric patients diagnosed with diffuse choroidal hemangioma were included in the study. Preplaque visual acuity ranged from 20/150 to no light perception. All patients had extensive serous retinal detachment at presentation. An iodine-125 radioactive plaque was placed on the affected eye to administer a dose of 34.2-42.1 Gy to the tumor apex over a median of 4 days. Tumor regression and subretinal fluid resolution were observed in all eyes within 17 months of treatment. Visual acuity improved in two patients. Radiation-induced cataract and subretinal fibrosis were documented in one case, and one patient developed radiation retinopathy. No patients developed neovascular glaucoma within the follow-up time of 12-65 months. CONCLUSION: Iodine-125 plaque radiotherapy is an effective option for diffuse choroidal hemangioma, although there is a risk for radiation-induced complications.


Asunto(s)
Braquiterapia , Neoplasias de la Coroides , Hemangioma , Humanos , Niño , Braquiterapia/efectos adversos , Estudios Retrospectivos , Hemangioma/radioterapia , Hemangioma/tratamiento farmacológico , Radioisótopos de Yodo/uso terapéutico , Neoplasias de la Coroides/diagnóstico , Estudios de Seguimiento , Resultado del Tratamiento
6.
Exp Eye Res ; 107: 52-8, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23206928

RESUMEN

Macrophages have been found to be negative predictors of outcome in patients with uveal melanoma. In particular, recent studies point toward a disease-progressing role of proangiogenic M2 macrophages in melanomas with monosomy 3. Although most studies implicate a protective effect of PPAR-gamma activation in tumors, PPAR-gamma has also been shown to promote the polarization of M1 macrophages toward the M2 phenotype. The purpose of this investigation was first, to characterize the phenotype of tumor infiltrating macrophages and second, to study PPAR-gamma expression in uveal melanomas with molecular gene expression profile as prognostic predictors for patients' outcome. Twenty specimens from patients with uveal melanoma were analyzed for clinical and histologic tumor characteristics. The molecular RNA profile (class 1 or class 2) was commercially determined. Using immunohistochemical techniques, the specimens were dual labeled for CD68 and CD163. CD68 + CD163- M1 macrophages and CD68 + CD163+ M2 macrophages were analyzed in ten high power fields sparing macrophage-poor areas and a mean value was calculated for each tumor. The tumors were immunostained for von Willebrand factor and the micro vascular density (MVD) was analyzed according to Foss. To assess the proliferative rate of each tumor, Ki67 expression was evaluated in ten high power fields followed by calculation of a mean value. Expression of PPAR-gamma was evaluated using a score from 0 (no staining) to 3 (tumor entirely stained). Statistical analysis and a respective correlation were made between histologic characteristics, molecular profile, type of tumor infiltrating macrophages (M1 vs. M2), MVD, proliferative rate, and PPAR-gamma expression. Our results showed a correlation between the ratio of M2/M1 macrophages and the molecular profile with a ratio of approximately 1 corresponding to molecular class 1 and a ratio of approximately 2 corresponding to molecular class 2 (p = 0.01). The ratio of M2/M1 macrophages was higher in tumors with extraocular extension (p = 0.01). PPAR-gamma was predominantly expressed in the cytoplasm of tumor cells. Its expression showed no association with the molecular RNA profile (p = 0.83). This study confirmed that the ratio of M2/M1 macrophages is another prognostic factor in uveal melanoma. Thus, polarization of macrophages plays an important role for patients' outcome. PPAR-gamma is expressed in uveal melanoma tumor cells and further studies are warranted to determine its role in tumor biology.


Asunto(s)
Macrófagos/metabolismo , Melanoma/genética , Melanoma/metabolismo , PPAR gamma/metabolismo , ARN Neoplásico/genética , Neoplasias de la Úvea/genética , Neoplasias de la Úvea/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Antígenos CD/metabolismo , Antígenos de Diferenciación Mielomonocítica/metabolismo , Femenino , Perfilación de la Expresión Génica , Humanos , Inmunohistoquímica , Antígeno Ki-67/metabolismo , Masculino , Melanoma/patología , Persona de Mediana Edad , Receptores de Superficie Celular/metabolismo , Neoplasias de la Úvea/patología , Adulto Joven , Factor de von Willebrand/metabolismo
7.
Artículo en Inglés | MEDLINE | ID: mdl-36580667

RESUMEN

PURPOSE: To report a rare case of infusion port site tumor seeding of choroidal melanoma after pars plana vitrectomy-assisted biopsy and successful treatment with second plaque brachytherapy. METHODS: Observational case report with clinical data and diagnostic images. RESULTS: A 55-year-old Caucasian woman diagnosed with choroidal melanoma of the left eye was found to have a second intraocular tumor thirty months after plaque brachytherapy and pars plana vitrectomy-assisted tumor biopsy. The second melanoma developed at the 5 o'clock vitrectomy infusion port site. The tumor regressed after plaque brachytherapy and the patient has not developed systemic metastasis five years after diagnosis of intraocular seeding. CONCLUSION: Intraocular seeding into the infusion port site, although rare, may be encountered after pars plana vitrectomy-assisted biopsy of choroidal melanoma.

8.
Ophthalmology ; 118(11): 2212-7, 2011 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-21906815

RESUMEN

OBJECTIVE: To evaluate the use of microscope mounted spectral domain optical coherence tomography (SD-OCT) to detect changes in retinal anatomy during macular surgery. DESIGN: Retrospective, observational case series. PARTICIPANTS: We included 25 eyes of 24 consecutive patients who underwent SD-OCT during macular surgery. METHODS: A retrospective review of operative techniques, outcomes, and imaging for all patients who underwent intraoperative microscope mounted SD-OCT during surgery for macular hole or epiretinal membrane (ERM) from April 2009 to April 2010 was performed. Qualitative and quantitative characteristics of intraoperative and postoperative changes in retinal anatomy were studied. MAIN OUTCOME MEASURES: Intraoperative change in macular hole dimensions and retinal thickness in patients with ERM owing to surgical manipulation measured using SD-OCT. RESULTS: Intraoperative SD-OCT from 13 eyes of 13 patients undergoing surgery for macular hole was reviewed. Two cases had images of suboptimal quality and were excluded. The remaining 11 eyes were subjected to quantitative analysis, which revealed stability of macular hole height and central hole diameter after internal limiting membrane (ILM) peeling, but an increase in the diameter of subretinal fluid under the macula in ten of 11 eyes (average 87% wider). Intraoperative imaging from 12 eyes of 11 patients undergoing surgery for ERM was analyzed. Quantitative analysis revealed an average increase of retinal thickness after ILM peel of <2%. Ten of 12 eyes developed a new subretinal hyporeflectance, which likely represents shallow detachment of the macula, after uncomplicated membrane peel. CONCLUSIONS: Use of intraoperative SD-OCT has provided new insight into the changes to retinal anatomy during macular surgery and may prove to be a useful tool for vitreoretinal surgery. Further study is warranted to determine whether intraoperative changes such as the creation of shallow retinal detachments during uncomplicated macular surgery affects visual recovery. FINANCIAL DISCLOSURE(S): Proprietary or commercial disclosure may be found after the references.


Asunto(s)
Membrana Epirretinal/diagnóstico , Membrana Epirretinal/cirugía , Retina/patología , Perforaciones de la Retina/diagnóstico , Perforaciones de la Retina/cirugía , Tomografía de Coherencia Óptica/métodos , Membrana Basal/patología , Humanos , Verde de Indocianina , Periodo Intraoperatorio , Microscopía , Estudios Retrospectivos , Tomografía de Coherencia Óptica/instrumentación , Triamcinolona Acetonida , Cirugía Vitreorretiniana
9.
Langmuir ; 27(10): 6107-15, 2011 May 17.
Artículo en Inglés | MEDLINE | ID: mdl-21504165

RESUMEN

We present a novel platform for investigating the composition-specific interactions of proteins (or other biologically relevant molecules) with model membranes composed of compositionally distinct domains. We focus on the interaction between a mitochondrial-specific lipid, cardiolipin (CL), and a peripheral membrane protein, cytochrome c (cyt c). We engineer vesicles with compositions such that they phase separate into coexisting liquid phases and the lipid of interest, CL, preferentially localizes into one of the domains (the liquid disordered (L(d)) phase). The presence of CL-rich and CL-depleted domains within the same vesicle provides a built-in control experiment to simultaneously observe the behavior of two membrane compositions under identical conditions. We find that cyt c binds strongly to CL-rich domains and observe fascinating morphological transitions within these regions of membrane. CL-rich domains start to form small buds and eventually fold up into a collapsed state. We also observe that cyt c can induce a strong attraction between the CL-rich domains of adjacent vesicles as demonstrated by the development of large osculating regions between these domains. Qualitatively similar behavior is observed when other polycationic proteins or polymers of a similar size and net charge are used instead of cyt c. We argue that these striking phenomena can be simply understood by consideration of colloidal forces between the protein and the membrane. We discuss the possible biological implications of our observations in relation to the structure and function of mitochondria.


Asunto(s)
Cardiolipinas/metabolismo , Membrana Celular/química , Membrana Celular/metabolismo , Citocromos c/metabolismo , Liposomas Unilamelares/química , Liposomas Unilamelares/metabolismo , Animales , Bovinos , Microscopía Confocal , Membranas Mitocondriales/química , Membranas Mitocondriales/metabolismo , Unión Proteica , Saccharomyces cerevisiae/enzimología
10.
Retina ; 31(1): 148-53, 2011 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-20921926

RESUMEN

PURPOSE: To report the macular hole closure rate and visual outcomes of patients with residual triamcinolone acetonide in the fovea after macular hole repair. METHODS: We reviewed the medical records of consecutive patients who underwent macular hole surgery at our institution between 2005 and 2008. Only patients with visible triamcinolone in the fovea in the first postoperative month were included. RESULTS: Six patients with Stage III or IV macular holes were included. All patients underwent pars plana vitrectomy, internal limiting membrane peeling, and gas tamponade. Triamcinolone acetonide was used to visualize the vitreous in every patient, and diluted indocyanine green was used to stain the internal limiting membrane in five patients. The median preoperative best-corrected visual acuity was 20/200, which improved to a median of 20/40 at the last follow-up. Five patients eventually developed retinal pigment epithelial alterations. Anatomic hole closure was achieved in every patient. The mean follow-up was 23 months (range, 3-36 months). CONCLUSION: Residual triamcinolone sequestered in the fovea after macular hole surgery did not affect hole closure or prevent improvement in visual acuity. It is unclear whether the retinal pigment epithelial alterations in our patients represent toxicity or are unrelated to the triamcinolone exposure.


Asunto(s)
Fóvea Central/metabolismo , Glucocorticoides/farmacocinética , Perforaciones de la Retina/metabolismo , Perforaciones de la Retina/cirugía , Triamcinolona Acetonida/farmacocinética , Vitrectomía , Colorantes , Progresión de la Enfermedad , Membrana Epirretinal/cirugía , Anteojos , Femenino , Estudios de Seguimiento , Fondo de Ojo , Gases/administración & dosificación , Humanos , Verde de Indocianina , Inyecciones Intraoculares , Presión Intraocular , Masculino , Persona de Mediana Edad , Periodo Posoperatorio , Perforaciones de la Retina/diagnóstico , Perforaciones de la Retina/fisiopatología , Coloración y Etiquetado , Distribución Tisular , Tomografía de Coherencia Óptica , Resultado del Tratamiento , Agudeza Visual , Vitrectomía/métodos , Cuerpo Vítreo
11.
Ophthalmol Retina ; 5(3): 292-300, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-32683108

RESUMEN

PURPOSE: Determine the efficacy of combination intravitreal and systemic antiviral therapy for the treatment of acute retinal necrosis (ARN) and risk factors impacting visual acuity (VA) and retinal detachment (RD) outcomes. DESIGN: Single-center retrospective case series. PARTICIPANTS: Patients with an ARN diagnosis based on clinical features and polymerase chain reaction confirmation who were treated at a tertiary referral, university-based academic practice. METHODS: Patient records were reviewed for demographic information including age and gender. Snellen VA, disease findings including RD outcomes, optic nerve involvement, and treatments were recorded. Incidence rates of major VA and RD outcomes were calculated based on the number of events and exposure times. Cox proportional hazards regression modeling and survival analyses were used to identify factors related to VA and RD outcomes over time. MAIN OUTCOME MEASURES: Logarithm of the minimal angle of resolution VA, 2-line or more VA gain, severe vision loss (SVL) of 20/200 or worse, RD development, and fellow eye involvement. RESULTS: Twenty-three eyes of 21 patients (11 male, 10 female) were reviewed. Thirteen patients (62%) had herpes simplex virus and 8 patients (38%) had varicella zoster virus. The event rate for 2-line or more VA gain was 0.49 events/eye-year (95% confidence interval [CI], 0.26-0.86 events/eye-year), whereas the rate of SVL was 0.61 events/eye-year (95% CI, 0.34-1.02 events/eye-year). Retinal detachment development was observed at a rate of 0.59 events/eye-year (95% CI, 0.33-1.00 events/eye-year). Thirteen of 23 eyes (57%) demonstrated RD with a mean time of 120 days after ARN diagnosis. With each additional quadrant of retina involved, a greater risk of RD development over time was observed (hazard ratio, 2.21; 95% CI, 1.12-4.35). Nine percent of eyes progressed with additional quadrantic involvement, despite combination systemic and intravitreal antiviral therapy; however, none of the 19 patients demonstrating unilateral ARN showed fellow-eye involvement after initiation of therapy. CONCLUSIONS: Combination intravitreal and systemic antiviral therapy for ARN can be effective in improving VA and limiting retinitis progression. Each additional quadrant of retina involved was associated with a 2.2-fold greater risk of RD, which may impact monitoring, timing of intervention, and patient counseling.


Asunto(s)
Antivirales/administración & dosificación , Infecciones Virales del Ojo/tratamiento farmacológico , Síndrome de Necrosis Retiniana Aguda/tratamiento farmacológico , Agudeza Visual , Adulto , ADN Viral/análisis , Vías de Administración de Medicamentos , Infecciones Virales del Ojo/complicaciones , Infecciones Virales del Ojo/virología , Femenino , Estudios de Seguimiento , Herpesvirus Humano 3/genética , Humanos , Masculino , Síndrome de Necrosis Retiniana Aguda/diagnóstico , Síndrome de Necrosis Retiniana Aguda/etiología , Estudios Retrospectivos , Factores de Tiempo
12.
Int J Retina Vitreous ; 7(1): 18, 2021 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-33663619

RESUMEN

BACKGROUND: The management of an outbreak of endophthalmitis associated with intravitreal bevacizumab represents a challenging real-time process involving identification of cases, treatment and mitigation measures during the outbreak. We summarize the clinical presentation and management of a cluster of endophthalmitis cases from contaminated bevacizumab, in addition to mathematical probabilistic assessment of the number of cases that define an outbreak. METHODS: A retrospective study was conducted to assess the management of an endophthalmitis outbreak after intravitreal bevacizumab (IVB) administration. Demographic data, clinical information, individual patient management and public health reporting measures were reviewed. Outcomes of patients who received prophylactic antibiotics for endophthalmitis prevention were also reviewed. Binomial tail probability calculations were performed to determine the likelihood of clusters of endophthalmitis that could inform when an outbreak was evolving that would warrant more public health notification measures and communication. RESULTS: Forty-five eyes of 42 patients who received IVB from a single batch were reviewed. Four cases of endophthalmitis from Granulicatella adiacens, a nutritionally-variant Streptococcus species, were treated successfully with intravitreal antibiotics ± vitrectomy. Thirty-four of the remaining 41 eyes were treated with prophylactic intravitreal vancomycin with no additional cases of endophthalmitis. Outbreak management also included CDC, ASRS and public health authority notification. Binominal tail probabilities demonstrated the rarity of clusters from a single batch (i.e. ~ 1/10,000 for 2 cases; 1/2 million for 3 cases). However, given the U.S. scale of IVB administration, there is an 87% chance of a cluster ≧ 2 and a 1% chance of a cluster ≧ 3 cases annually, which may guide outbreak management. A process diagram was developed to incorporate patient management and public health measures when an outbreak is suspected. CONCLUSION: Intravitreal antibiotics and vitrectomy were effective in the individual management of cases of endophthalmitis, and no serious adverse events occurred with prophylactic intravitreal vancomycin for at-risk eyes. Best practices for outbreaks should be evaluated, given their likelihood within the U.S. and the sight-threatening consequences of endophthalmitis.

13.
Ophthalmology ; 116(8): 1531-7, 2009 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-19501405

RESUMEN

OBJECTIVE: To evaluate the incidence, effect on visual recovery, and predisposing risk factors of postvitrectomy macular edema (ME). DESIGN: Prospective cohort study. PARTICIPANTS: One-hundred nine eyes undergoing nonemergent vitrectomy surgery. METHODS: Eyes were evaluated for postoperative day 1 inflammation, 1-month retinal thickness using optical coherence tomography, and preoperative and 1-month postoperative best-corrected visual acuity (BCVA). Macular edema was defined as central subfield thickness > or =272 microm. MAIN OUTCOME MEASURES: Retinal thickness, inflammation, and BCVA. RESULTS: Incidence of ME on optical coherence tomography was 47% (95% confidence interval [CI], 37%-56%). Mean 1-month visual acuity improved 3.3 lines (0.33 logarithm of minimum angle of resolution [logMAR] units) to 20/80(+1) (0.58+/-0.46 logMAR units) from 20/150(-2) (0.91+/-0.63 logMAR units) before surgery (P<0.001). Mean 1-month center point thickness (CPT), central subfield (CSF), and total macular volume were 265+/-107 microm, 288+/-94 microm, and 7.8+/-1.2 mm(3), respectively. Severity of postoperative inflammation predicted retinal thickness at 1 month (P<0.05). Intraoperative epinephrine use was associated with increased postoperative inflammation (P = 0.02). Eyes with greater reduction in CSF (or CPT) from baseline experienced more rapid visual recovery (r = -0.36; 95% CI, -0.61 to -0.06; P = 0.02). CONCLUSIONS: Postvitrectomy ME is common and delays visual recovery. Degree of postoperative inflammation is an important risk factor for ME and, in this series, was increased in the setting of intraocular epinephrine. Efforts to reduce or prevent inflammation after vitrectomy should be beneficial and therefore are encouraged.


Asunto(s)
Edema Macular/diagnóstico , Edema Macular/epidemiología , Complicaciones Posoperatorias , Tomografía de Coherencia Óptica , Vitrectomía , Femenino , Humanos , Incidencia , Edema Macular/fisiopatología , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Recuperación de la Función/fisiología , Retina/patología , Enfermedades de la Retina/cirugía , Factores de Riesgo , Agudeza Visual/fisiología , Hemorragia Vítrea/cirugía
14.
Saudi J Ophthalmol ; 33(3): 260-267, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31686968

RESUMEN

With fewer than 100 peer-reviewed cases reported in the world to date, the underlying etiology of torpedo maculopathy has remained elusive. In this literature review, we provide new evidence to better support, reject and unify claims regarding cause, diagnosis, and proper clinical management of this disease. We reviewed 44 case reports and case series, which included 77 patients (after exclusions). We additionally introduced 3 new cases from our clinical practice for a total of 80 cases. Ages at presentation ranged from 6 months old to 73 years old (mean: 24.2 years old). The nasal aspects of torpedo maculopathy lesions pointed toward the optic disc and localized to a kite-shaped region of the temporal macula, correlating with the anatomic junction of the superior arcuate, inferior arcuate, and papillomacular bundles of retinal nerve fiber layer distribution. No patterns were observed among the temporal aspects of the lesions. These findings support a congenital etiology of torpedo maculopathy and a possible influence of the retinal nerve fiber layer in the development of mature retinal pigment epithelium.

15.
Ophthalmol Retina ; 2(4): 268-275, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-31047235

RESUMEN

PURPOSE: To evaluate postoperative pain level using a supplemental peribulbar injection at the conclusion of retinal surgery. DESIGN: Prospective, parallel-assigned, single-masked, randomized clinical trial. PARTICIPANTS: Fifty-eight patients undergoing scleral buckle, vitrectomy, or combined surgery. METHODS: In a single academic institutional practice, 58 patients undergoing scleral buckle, vitrectomy, or combined surgery were enrolled. Exclusion criteria included those with a risk for glaucoma, a pre-existing chronic pain disorder, among others. Patients were assigned randomly to receive a postoperative peribulbar formulation of either bupivacaine, triamcinolone acetonide, and cefazolin (group A) or bupivacaine, balanced salt solution, and cefazolin (group B). The postoperative pain score and ocular motility were assessed by a masked observer on the first postoperative day. MAIN OUTCOME MEASURES: The primary outcome measure was the postoperative pain score. Secondary outcome measures included oral analgesic use, ocular motility, and intraocular pressure (IOP). RESULTS: The mean pain scores were 2.8±2.9 for group A and 3.8±2.6 for group B (P = 0.095). Pain was absent in 28% of group A patients versus 14% of group B patients (P = 0.11). Group A required less narcotic pain medication (hydroxycodone: group A, 0.7±3 mg vs. group B, 3±6 mg; P = 0.05; oxycodone: group A, 7±7 mg vs. 9±13 mg; P = 0.2) than group B. Motility was full in group B and limited in group A (P ≤ 0.001), with no differences in mean IOP measurements at any point after surgery. CONCLUSIONS: We did not demonstrate a statistically significant reduction in mean postoperative pain scores. However, patients in group A required less hydroxycodone use and had greater akinesia, suggesting prolonged neural blockade.

16.
Melanoma Res ; 28(2): 120-125, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29303890

RESUMEN

For the treatment of choroidal melanoma, palladium-103 (Pd) and ruthenium-106 (Ru) plaque brachytherapy shows reduced toxicity compared with the historical standard iodine-125. No report has directly compared the clinical outcomes between Pd and Ru, and the reasons for the selection of one over the other remain purely theoretical. Patients with choroidal melanoma with apical tumor height up to 5 mm were included. Patients from Emory University were treated with Pd between 1993 and 2012. Patients from Cleveland Clinic were treated with Ru between 2005 and 2010. Medical records were retrospectively reviewed. We compared post-treatment visual acuity (VA), toxicity, and oncologic outcomes. Pd patients (n=124) and Ru patients (n=42) had a median follow-up of 4.2 and 5.0 years, respectively. Radiation retinopathy-free survival was similar for both radioisotopes, but Ru had lower grades of retinopathy (P=0.006). Pd was associated with worse VA preservation (≥20/40) by year 3 (odds ratio: 3.8; 95% confidence interval: 1.01-14.31, P=0.048). Pd was associated with higher distant metastases-free survival (DMFS) in multivariate analysis (hazard ratio: 0.10; 95% confidence interval: 0.02-0.38; P<0.001). Ru had lower grades of radiation retinopathy and improved long-term VA preservation, but also inferior DMFS, compared with Pd. Because of the inherent limitations of a retrospective analysis, the significance of the inferior DMFS for Ru remains unclear, although the suggestion of a slight inferiority in terms of DMFS for Ru is consistent with the other limited literature. On the basis of this study, we believe that both radioisotopes remain appropriate for the treatment of small choroidal melanomas up to 5 mm in apical height.


Asunto(s)
Braquiterapia/métodos , Neoplasias de la Coroides/radioterapia , Melanoma/radioterapia , Paladio/administración & dosificación , Radioisótopos/administración & dosificación , Radioisótopos de Rutenio/administración & dosificación , Neoplasias Cutáneas/radioterapia , Anciano , Braquiterapia/efectos adversos , Neoplasias de la Coroides/patología , Femenino , Humanos , Masculino , Melanoma/patología , Persona de Mediana Edad , Paladio/efectos adversos , Radioisótopos/efectos adversos , Estudios Retrospectivos , Radioisótopos de Rutenio/efectos adversos , Neoplasias Cutáneas/patología
17.
Ocul Immunol Inflamm ; 25(5): 639-648, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27002464

RESUMEN

PURPOSE: To report on the clinical data of seven patients with T-cell intraocular lymphoma (IOL). METHODS: Retrospective case series. RESULTS: Seven immunocompetent patients, 12 eyes, 6 women, with T-cell-IOL were included from five countries. Mean age was 53.5 years (range: 25-82). Four patients had systemic-ocular lymphoma, two had CNS-ocular lymphoma, and one had systemic-CNS- ocular lymphoma. Vitritis was the most frequent clinical sign, followed by anterior uveitis and serous retinal detachment. Cytopathologic examination was performed on all ocular specimens (vitreous in six and iris mass biopsy in one patient). Adjunctive diagnostic procedures included immunohistochemistry, molecular tests, and cytokine profiling of vitreous samples. Treatment modalities included systemic chemotherapy (five patients), intravitreal methotrexate (three patients), globe radiotherapy, and intrathecal chemotherapy. Mean survival from diagnosis was 21.7 months (range: 2-69). Two patients are still alive. CONCLUSIONS: T-cell IOL has variable clinical manifestations and prognosis. Systemic involvement, SRD, and vitreoretinal involvement were frequently observed.


Asunto(s)
Neoplasias del Sistema Nervioso Central , Neoplasias del Ojo , Linfoma Intraocular , Linfoma de Células T , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias del Sistema Nervioso Central/diagnóstico , Neoplasias del Sistema Nervioso Central/tratamiento farmacológico , Neoplasias del Ojo/diagnóstico , Neoplasias del Ojo/tratamiento farmacológico , Femenino , Humanos , Inmunosupresores/uso terapéutico , Inyecciones Espinales , Linfoma Intraocular/diagnóstico , Linfoma Intraocular/tratamiento farmacológico , Inyecciones Intravítreas , Linfoma de Células T/diagnóstico , Linfoma de Células T/tratamiento farmacológico , Masculino , Metotrexato/uso terapéutico , Persona de Mediana Edad , Radioterapia , Estudios Retrospectivos , Centros de Atención Terciaria , Resultado del Tratamiento , Agudeza Visual/fisiología , Vitrectomía
18.
Brachytherapy ; 16(3): 646-653, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28262517

RESUMEN

PURPOSE: To evaluate outcomes of choroidal melanoma patients treated with 125I or 103Pd plaque brachytherapy. METHODS AND MATERIALS: From 1993 to 2012, our institution treated 160 patients with 103Pd (56.1%) and 125 patients with 125I (43.9%) plaque brachytherapy. Tumor outcomes, visual acuity (VA), and toxicity were compared. Multivariate analyses (MVAs) and propensity score analysis were used to help address differences in baseline characteristics. RESULTS: Median followup was longer for 125I patients, 52.7 vs. 43.5 months (p < 0.01). At baseline, 103Pd patients had lower rates of VA worse than 20/200 (4.4% vs. 16%, p = 0.002), T3-T4 tumors (17.5% vs. 32.8%, p = 0.03), and transpupillary thermotherapy use (3.1% vs. 9.6%, p = 0.001). Both 103Pd and 125I provided >90% 3-year overall survival and >93% 5-year secondary enucleation-free survival. On MVA, radionuclide was not predictive for tumor outcomes. A higher percentage maintained vision better than 20/40 with 103Pd (63% vs. 35%, p = 0.007) at 3 years. MVA demonstrated 103Pd radionuclide (odds ratio [OR]: 2.12, p = 0.028) and tumor height ≤5 mm (OR: 2.78, p = 0.017) were associated with VA better than 20/40. Propensity score analysis matched 23 125I with 107 103Pd patients. 103Pd continued to predict better VA at 3 years (OR: 8.10, p = 0.014). On MVA for the development of VA worse than 20/200 or degree of vision loss, radionuclide was not significant. Lower rates of radiation retinopathy were seen with 103Pd than 125I (3 years: 47.3% vs. 63.9%, p = 0.016), with radionuclide significant in MVA. CONCLUSIONS: Both 125I and 103Pd achieve excellent tumor control. An increased probability of long-term VA better than 20/40 and reduced risk of radiation retinopathy is associated with 103Pd.


Asunto(s)
Braquiterapia , Neoplasias de la Coroides/radioterapia , Radioisótopos de Yodo/uso terapéutico , Melanoma/radioterapia , Paladio/uso terapéutico , Radioisótopos/uso terapéutico , Agudeza Visual , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Braquiterapia/efectos adversos , Braquiterapia/métodos , Neoplasias de la Coroides/patología , Neoplasias de la Coroides/cirugía , Enucleación del Ojo , Femenino , Estudios de Seguimiento , Humanos , Radioisótopos de Yodo/efectos adversos , Masculino , Melanoma/patología , Melanoma/cirugía , Persona de Mediana Edad , Estadificación de Neoplasias , Paladio/efectos adversos , Traumatismos por Radiación/etiología , Radioisótopos/efectos adversos , Enfermedades de la Retina/etiología , Estudios Retrospectivos , Tasa de Supervivencia , Resultado del Tratamiento , Carga Tumoral , Adulto Joven
19.
Retin Cases Brief Rep ; 10(4): 341-4, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26650564

RESUMEN

PURPOSE: To report a case of panuveitis, retinal vasculitis, and optic disk granuloma due to sarcoidosis. METHODS: Case report and literature review. RESULTS: A 26-year-old previously healthy African American male presented with four months of gradual progressive visual decline in the right eye. Clinical examination revealed severe panuveitis, retinal vasculitis, and large optic nerve mass lesion. Diffuse supraclavicular lymphadenopathy was also present. Histopathologic examination of the lymph node biopsy revealed granulomatous inflammation with some areas of caseous necrosis consistent with sarcoidosis. CONCLUSION: Sarcoidosis is a common cause of uveitis and retinal vasculitis. In rare cases, an optic disk granuloma may occur and can be treated with immunosuppressive therapy.


Asunto(s)
Granuloma/etiología , Enfermedades del Nervio Óptico/etiología , Panuveítis/etiología , Vasculitis Retiniana/etiología , Sarcoidosis/complicaciones , Adulto , Humanos , Masculino
20.
J AAPOS ; 9(3): 264-7, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-15956947

RESUMEN

BACKGROUND: Errors in neural crest development are responsible for a number of ocular disorders. In some cases, these ocular abnormalities may be associated with systemic disorders, some of which may be life threatening. METHODS: We reviewed the medical record of 3 children from 2 institutions with a similar constellation of ocular and cardiac abnormalities. RESULTS: All 3 children had iris hypoplasia with pupils 6-7 mm in diameter that had minimal or no response to light or pharmacological agents. The ocular examinations were otherwise normal. All 3 children also had large aorticopulmonary septal defects which were surgically repaired. CONCLUSIONS: We report an association between iris hypoplasia and aorticopulmonary septal defects. Like the iris stroma, the aorticopulmonary septum forms from neural crest cells during embryogenesis which divide the truncus arteriosus into the ascending aorta and pulmonary trunk. Children with iris hypoplasia should undergo an immediate cardiac evaluation. It is important that opthalmologists be aware of the association between these two disorders since an aorticopulmonary septal defect is a life-threatening disorder.


Asunto(s)
Defecto del Tabique Aortopulmonar/complicaciones , Anomalías del Ojo/complicaciones , Iris/anomalías , Defecto del Tabique Aortopulmonar/embriología , Anomalías del Ojo/embriología , Anomalías del Ojo/patología , Femenino , Enfermedades Fetales , Humanos , Lactante , Iris/patología , Estudios Longitudinales , Masculino , Cresta Neural/crecimiento & desarrollo
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA