Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 27
Filtrar
1.
Am J Ophthalmol ; 268: 212-221, 2024 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-39033833

RESUMEN

PURPOSE: To describe the optical coherence tomography (OCT) features that can differentiate eyes with fovea-off exudative retinal detachment (ERD) vs rhegmatogenous retinal detachment (RRD), with particular attention to outer retinal corrugations (ORCs). DESIGN: Multicenter, retrospective cross-sectional study. METHODS: Multicenter, retrospective cross-sectional study of patients diagnosed with unilateral or bilateral fovea-off ERD or primary, acute, fovea-off RRD between 2016 and 2021. This study was performed with the approval from the Research Ethics Board at the University of Toronto and was conducted in accordance with the Declaration of Helsinki. Patients with any ERD etiology and evidence of extensive, bullous fovea-off detachment and in the RRD group: consecutive patients with acute, primary fovea-off RRD with good quality baseline SD-OCT imaging were included. Patients with exudative choroidal neovascularization from any etiology, optic nerve pit, significant media opacity, or OCT images with poor quality or low signal strength were excluded. Primary outcome was to describe the morphological features of the macula using SD-OCT in patients diagnosed with ERD vs RRD, with specific interest in ORCs. RESULTS: One hundred sixty-one eyes (51 ERD and 110 RRD) of 154 patients were included. Fifty-one eyes with ERD presented with 1 of 15 etiologies. ERD were associated with a greater risk of having hyperreflective dots in the outer retina (92.2% vs 74.5%, P = .009), hyperreflective material and dots in the subretinal fluid (72.5% vs 34.5%, P < .001), internal limiting membrane and inner retinal undulations (70.6% vs 39.4%, P < .001), and retinal pigment epithelium undulations (44.9% vs 6.4%, P < .001) compared to RRD. RRD was associated with a greater risk of outer retinal corrugations (80% vs 0%, P < .001), intraretinal fluid (90.9% vs 41.2%, P < .001) and ellipsoid zone thickening (90% vs 66.7%, P < .001) compared to ERD. CONCLUSION: The presence of ORCs are highly specific for RRD and absent in ERD. This is likely related to differences in the pathophysiology of the diseases process, specifically the content of the subretinal fluid. Understanding the differences in OCT morphological features of ERD vs RRD may aid with diagnosis and management.

2.
Can J Ophthalmol ; 52(6): 592-598, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-29217028

RESUMEN

OBJECTIVE: To assess retinoblastoma epidemiological trends in the Surveillance, Epidemiology, and End Results (SEER) registry. METHODS: All cases of retinoblastoma in the SEER database from 1973 to 2009 were identified. Kaplan-Meier survival analyses were performed for pathological grade, patient age, sex, year of diagnosis, and treatment modality. Cox proportional hazards regression assessed the impact of patient and tumour characteristics on survival. RESULTS: 1452 cases of retinoblastoma were analyzed. The mean patient age at diagnosis was 1.44 years. The tumour was unilateral in 71.0% and bilateral in 29.0%. The mean follow-up was 129.1 months. Overall survival increased during the study interval. Patients with bilateral tumours were diagnosed at an earlier age (0.46 years) than patients with unilateral disease (1.77 years; p < 0.0001). Bilateral retinoblastoma (90.3% 10-year overall survival) was associated with decreased overall survival than unilateral retinoblastoma (96.1% 10-year overall survival). Bilateral retinoblastoma was also associated with an increased incidence of nonocular malignancies (7.8%) compared with unilateral retinoblastoma (1.3%; p < 0.0001). Grade 1 tumours were diagnosed at a younger age (0.94 years) than grade 3 (2.24 years) and grade 4 tumours (2.14 years; p < 0.0001). Lower grade and lower stage tumours were independently associated with increased survival. In multivariate Cox proportional hazards analysis, T stage and laterality were the only covariates that correlated with overall survival. CONCLUSIONS: There appear to be associations between retinoblastoma tumour features such as tumour stage, pathological grade, and laterality with patient characteristics such as age at diagnosis, overall survival, and second malignancies.


Asunto(s)
Sistema de Registros , Neoplasias de la Retina/epidemiología , Retinoblastoma/epidemiología , Programa de VERF/estadística & datos numéricos , Adolescente , Adulto , Niño , Preescolar , Bases de Datos Factuales , Estudios Epidemiológicos , Femenino , Humanos , Incidencia , Lactante , Estimación de Kaplan-Meier , Masculino , Estadificación de Neoplasias , Neoplasias de la Retina/patología , Neoplasias de la Retina/radioterapia , Retinoblastoma/patología , Retinoblastoma/radioterapia , Tasa de Supervivencia , Estados Unidos/epidemiología
3.
JAMA Ophthalmol ; 135(2): 155-156, 2017 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-27893048
4.
Retina ; 37(7): 1229-1235, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-27787448

RESUMEN

PURPOSE: To determine the incidence of retinal redetachment due to proliferative vitreoretinopathy after open-globe trauma in smokers and nonsmokers. METHODS: A total of 892 patients comprising 893 open-globe injuries, in whom 255 eyes were diagnosed with a retinal detachment, and 138 underwent surgical repair were analyzed in a retrospective case-control study. Time to redetachment was examined using the Kaplan-Meier method and analysis of risk factors was analyzed using Cox proportional hazards modeling. RESULTS: Within one year after retinal detachment surgery, 47% (95% CI, 39-56%) of all 138 repaired retinas redetached because of proliferative vitreoretinopathy. Being a smoker was associated with a higher rate of detachment (adjusted hazard ratio 1.96, P = 0.01). As shown in previous studies, the presence of proliferative vitreoretinopathy at the time of surgery was also an independent risk factor for failure (adjusted hazard ratio 2.13, P = 0.005). Treatment with vitrectomy-buckle compared favorably to vitrectomy alone (adjusted hazard ratio 0.58, P = 0.04). Only 8% of eyes that redetached achieved a best-corrected visual acuity of 20/200 or better, in comparison to 44% of eyes that did not redetach (P < 0.001). CONCLUSION: Proliferative vitreoretinopathy is a common complication after the repair of retinal detachment associated with open-globe trauma, and being a smoker is a risk factor for redetachment. Further study is needed to understand the pathophysiologic mechanisms underlying this correlation.


Asunto(s)
Lesiones Oculares Penetrantes/complicaciones , Complicaciones Posoperatorias/epidemiología , Desprendimiento de Retina/complicaciones , Medición de Riesgo , Fumar/efectos adversos , Cirugía Vitreorretiniana , Vitreorretinopatía Proliferativa/etiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Casos y Controles , Niño , Preescolar , Lesiones Oculares Penetrantes/diagnóstico , Lesiones Oculares Penetrantes/cirugía , Femenino , Humanos , Incidencia , Masculino , Massachusetts/epidemiología , Persona de Mediana Edad , Complicaciones Posoperatorias/etiología , Recurrencia , Desprendimiento de Retina/diagnóstico , Desprendimiento de Retina/cirugía , Estudios Retrospectivos , Factores de Riesgo , Factores de Tiempo , Agudeza Visual , Vitreorretinopatía Proliferativa/diagnóstico , Vitreorretinopatía Proliferativa/epidemiología , Adulto Joven
7.
Retina ; 35(6): 1059-64, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25932548

RESUMEN

PURPOSE: To assess whether complication rates are comparable between phacovitrectomy using multipiece lenses versus single-piece foldable intraocular lenses. METHODS: Single-center, multisurgeon retrospective comparative consecutive interventional case series. Two hundred and seventy-one patients undergoing combined phacovitrectomy performed during a single session at a university-based ophthalmology practice from 2004 to 2013 were identified, of whom 184 met study inclusion criteria; 56.4% patients had diabetes mellitus. RESULTS: There was no difference in the total incidences of postoperative complications between combined surgery using single-piece and multipiece intraocular lenses (P = 0.80) or among individual complications between the 2 groups, including synechiae (2.7 vs. 5.3%; P = 0.61), pupillary capture (0.7 and 2.6%; P = 0.36), and lens subluxation (1.4 and 0%; P > 0.99). There was no difference in the incidences of complications in patients with diabetes mellitus compared with nondiabetic patients undergoing phacovitrectomy (P = 0.13). Complication rates did not differ between single-piece and multipiece lenses with the use of postoperative intravitreal tamponade (P = 0.67). CONCLUSION: Single-piece, acrylic intraocular lenses are associated with a low rate of surgical complications after combined phacovitrectomy and represent an acceptable alternative to multipiece foldable intraocular lenses under the circumstances and using the surgical techniques implemented in this study.


Asunto(s)
Implantación de Lentes Intraoculares , Lentes Intraoculares , Facoemulsificación , Vitrectomía , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Femenino , Humanos , Masculino , Persona de Mediana Edad , Polimetil Metacrilato , Complicaciones Posoperatorias , Diseño de Prótesis , Estudios Retrospectivos , Agudeza Visual
8.
Br J Ophthalmol ; 99(11): 1550-3, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25904122

RESUMEN

BACKGROUND: There has been a recent evolution in the management of uveal melanoma in regard to prognostic evaluation and treatment modalities. This study aims to evaluate the epidemiological trends of uveal melanoma since 1973 by using the Surveillance, Epidemiology, and End Results (SEER) Registry. METHODS: A total of 7043 uveal melanoma cases from the SEER database were retrospectively analysed, spanning 1973 to 2009. The main outcome measures were disease specific and overall patient survival. RESULTS: The mean patient age at diagnosis was 61.4 years, which has increased over the last 37 years. The mean follow-up interval was 85.9 months. The proportion of tumours demonstrating spindle cell histology has decreased. Spindle cell tumours yielded superior disease-specific survival to epithelioid and mixed tumours. The median age at diagnosis of spindle cell tumours (60 years) was significantly younger than epithelioid tumours (65 years) and mixed tumours (64 years old; p < 0.0001). In a Cox proportional hazards regression analysis, tumour histology, T stage and age at diagnosis were associated with disease-specific survival. The prevalence of cutaneous melanoma was increased in patients with uveal melanoma, but the lifetime prevalence of other primary cancers was not appreciably increased. CONCLUSIONS: The SEER data set demonstrates epidemiological trends in patient age at diagnosis and tumour histology over the last 37 years. Several patient and tumour characteristics are predictors of disease-specific survival. These findings have implications for disease surveillance and prognostic counselling.


Asunto(s)
Melanoma/epidemiología , Neoplasias de la Úvea/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Estudios Epidemiológicos , Femenino , Humanos , Masculino , Melanoma/mortalidad , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Sistema de Registros/estadística & datos numéricos , Estudios Retrospectivos , Programa de VERF/estadística & datos numéricos , Tasa de Supervivencia , Estados Unidos/epidemiología , Neoplasias de la Úvea/mortalidad
9.
Digit J Ophthalmol ; 21(3): 1-17, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-27330464

RESUMEN

PURPOSE: To assess the feasibility and potential obstacles of a departmental switch from ranibizumab (Lucentis, Genentech, South San Francisco, CA) to bevacizumab (Avastin, Genentech) for the treatment of neovascular age-related macular degeneration (AMD). METHODS: A total of 154 eyes treated for wet AMD with ranibizumab or bevacizumab were examined over a 10-month period. The treatment protocol was monthly induction therapy followed by injections as needed for macular edema or subretinal fluid on optical coherence tomography, new hemorrhage or edema on examination, worsening vision, or leakage on fluorescein angiography. Central subfield thickness and pinhole vision were the main treatment outcomes. Study windows were compared using t tests and Mann-Whitney U tests. Statistical significance was defined as a P value of <0.05. RESULTS: The majority of patients (88%) were willing to accept a bevacizumab injection. There was no difference in frequency of injection, central subfield thickness, visual outcome, or endophthalmitis rate between the ranibizumab and bevacizumab groups. A small subset of patients (4.5%) appeared to respond more favorably to ranibizumab than bevacizumab. CONCLUSIONS: Bevacizumab appears to be a cost-effective alternative to ranibizumab for the treatment of neovascular AMD. Patients previously treated with ranibizumab are typically willing to switch to bevacizumab. In the overwhelming majority of patients, there is no major decline in clinical status. However, select patients may respond better to ranibizumab injections.


Asunto(s)
Inhibidores de la Angiogénesis/uso terapéutico , Bevacizumab/uso terapéutico , Sustitución de Medicamentos , Ranibizumab/uso terapéutico , Degeneración Macular Húmeda/tratamiento farmacológico , Anciano , Anciano de 80 o más Años , Estudios de Factibilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
10.
Otolaryngol Head Neck Surg ; 152(2): 279-83, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25385802

RESUMEN

OBJECTIVE: To describe epidemiological trends in lacrimal gland malignancies in the United States. STUDY DESIGN: Retrospective database review. SETTING: Multicenter registry. SUBJECTS AND METHODS: A total of 702 malignant tumors of the lacrimal gland from the Surveillance, Epidemiology, and End Results database were included in the study. Disease-specific and overall survival were the primary outcome measures. Kaplan-Meier survival curves were generated for multiple patient and tumor characteristics, including race, histology, TNM tumor stage, age at diagnosis, radiotherapy, gender, and tumor grade. Cox proportional hazards regression was performed to assess the impact of patient and tumor characteristics on survival. RESULTS: Lymphoma (58.0%), adenoid cystic carcinoma (13.4%), adenocarcinoma (3.8%), and mucoepidermoid carcinoma (3.6%) accounted for most tumors. Lymphoma was associated with more favorable survival rates, while adenocarcinoma, adenoid cystic carcinoma, and mucoepidermoid carcinoma were associated with worse prognosis. There was a steady increase in the proportion of lymphoma diagnosed since 1973. In a multivariate Cox proportional hazards regression model, tumor histology remained as the only covariate correlated with disease-specific survival. CONCLUSION: Patient characteristics and survival rates differ between lymphoma, adenoid cystic carcinoma, adenocarcinoma, and mucoepidermoid carcinoma. The proportion of lacrimal gland cancer diagnosed as lymphoma has steadily increased over time. Cox proportional hazards regression analysis demonstrated tumor histology as one of the most important factors in patient survival. These results augment our understanding of the expected disease course of lacrimal gland malignancies.


Asunto(s)
Neoplasias del Ojo/epidemiología , Neoplasias del Ojo/patología , Enfermedades del Aparato Lagrimal/epidemiología , Enfermedades del Aparato Lagrimal/patología , Femenino , Humanos , Masculino , Sistema de Registros , Estudios Retrospectivos , Factores de Riesgo , Programa de VERF , Análisis de Supervivencia , Estados Unidos/epidemiología
11.
Am J Ophthalmol ; 158(3): 567-73.e2, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24879947

RESUMEN

PURPOSE: To analyze retinal thickness and volume measurements of X-linked retinoschisis patients by spectral-domain optical coherence tomography (SD OCT) and correlate these findings with visual acuity and patient age. DESIGN: Retrospective comparative case series. METHODS: Sixty-three eyes of 33 male patients with X-linked retinoschisis were gleaned from a SD OCT database at the University of Illinois at Chicago. Forty-one eyes of 21 patients with low refractive error, no visual impairment, and no known retinal disease served as age-similar controls. The mean age of the retinoschisis patients was 26.4 years. The mean age of patient controls was 30.0 years. Full-thickness, inner and outer retina thickness, and volume measurements were determined by SD OCT. RESULTS: Foveal schisis was observed in 81% of retinoschisis patients. Patients with foveal schisis tended to be younger than patients lacking foveal schisis. Inner and outer foveal thickness and volume measurements were increased in retinoschisis patients compared to controls. Outer retinal perifoveal and parafoveal thicknesses and volumes were consistently increased in retinoschisis patients relative to controls. In contrast, inner retinal perifoveal and parafoveal thickness and volume measurements were decreased in retinoschisis patients compared to controls. Worse visual acuity correlated with thinning of the temporal perifoveal inner retina and thickening of the inner fovea. Full-thickness measurements and inner retina and outer retina thickness and volume measurements tended to decrease with patient age. CONCLUSION: Increased inner retinal foveal thickness and decreased perifoveal inner retinal thickness correlates with worse visual acuity and overall retinal thickness decreases with age in X-linked retinoschisis.


Asunto(s)
Retina/patología , Retinosquisis/diagnóstico , Tomografía de Coherencia Óptica/métodos , Adolescente , Adulto , Niño , Progresión de la Enfermedad , Femenino , Fóvea Central/patología , Humanos , Masculino , Persona de Mediana Edad , Índice de Severidad de la Enfermedad , Adulto Joven
13.
J Glaucoma ; 23(1): 5-10, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22936278

RESUMEN

PURPOSE: Evaluate predictors and outcomes of ocular hypertension after open-globe injury. PATIENTS AND METHODS: This is a retrospective, case-control study reviewing records of consecutive patients with open-globe injuries treated at Massachusetts Eye and Ear Infirmary between February 1999 and January 2007. Of 658 patients treated, 382 had at least 2 months of follow-up and sufficient data to be included. Main outcome measures are visual acuity, intraocular pressure (IOP), and type of glaucoma intervention employed. RESULTS: Sixty-five (17%) patients developed ocular hypertension defined as IOP≥22 mm Hg at >1 visit or requiring treatment. Increased age (P<0.001), hyphema (0.025), lens injury (P<0.0001), and zone II injury (P=0.0254) are risk factors for developing ocular hypertension after open-globe injury. Forty-eight (74%) patients with ocular hypertension were treated medically, 8 (12%) underwent filtering or glaucoma drainage device surgery, 5 (8%) had IOP normalization with observation, while 4 (6%) required anterior chamber washout with no other glaucoma surgery. Patients with ocular hypertension had an average maximum IOP=33.4 mm Hg at a median follow-up of 21 days, with most patients maintaining normal IOP at all follow-up time points. Visual acuity improved over time with median acuity of hand motions preoperatively, and 20/60 at 12 and 36 months. CONCLUSIONS: Ocular hypertension is a significant complication after open-globe injury that sometimes requires surgical intervention. Predictive factors can alert physicians to monitor for elevated IOP in the first month after trauma. Most patients with traumatic ocular hypertension had improved visual acuity and IOP normalization over time.


Asunto(s)
Lesiones Oculares Penetrantes/complicaciones , Hipertensión Ocular/diagnóstico , Hipertensión Ocular/etiología , Adulto , Factores de Edad , Estudios de Casos y Controles , Lesiones de la Cornea , Lesiones Oculares Penetrantes/cirugía , Femenino , Estudios de Seguimiento , Humanos , Hipema/etiología , Presión Intraocular/fisiología , Cristalino/lesiones , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos , Factores de Riesgo , Esclerótica/lesiones , Resultado del Tratamiento , Agudeza Visual/fisiología
14.
Arch Otolaryngol Head Neck Surg ; 138(5): 463-6, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22507966

RESUMEN

OBJECTIVE: Acinic (or acinar) cell carcinoma (ACC) represents approximately 10% of salivary gland malignant tumors and most commonly occurs in the parotid gland. It carries a propensity for locoregional and distant metastasis. Although it is selectively used as an adjuvant in this tumor, radiotherapy (RT) has not been sufficiently examined in large population studies for survival impact. DESIGN: Retrospective database review. SETTING: Tertiary care center. PATIENTS: A total of 1241 cases of parotid ACC in the Surveillance, Epidemiology, and End Results (SEER) Program database from 1988 to 2007 were identified and analyzed. INTERVENTIONS: Comparison groups were surgery and surgery plus RT. Kaplan-Meier survival curves were generated for oncologic stage and histologic grade. MAIN OUTCOME MEASURES: Overall survival. RESULTS: A total of 969 patients had sufficient staging data for inclusion. When comparing surgery with surgery with adjuvant RT, there was no statistical difference in overall survival when stratifying for stage I (P = .57), stage II (P = .37), stage III (P = .25), and stage IV (P = .24) tumors. Similarly, adjuvant RT did not demonstrate a survival advantage when stratified by histologic grade of tumor. The highest-grade and highest-stage tumors were fewer in number, however. CONCLUSIONS: To our knowledge, this study represents the largest cohort of patients treated for ACC of the parotid. Adjuvant RT does not seem to provide a significant survival advantage for early-stage or lower-grade parotid ACC. Radiotherapy for highest-stage and highest-grade tumors requires further study.


Asunto(s)
Carcinoma de Células Acinares/radioterapia , Neoplasias de la Parótida/radioterapia , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Células Acinares/epidemiología , Carcinoma de Células Acinares/cirugía , Niño , Preescolar , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Neoplasias de la Parótida/epidemiología , Neoplasias de la Parótida/cirugía , Estudios Retrospectivos , Programa de VERF , Resultado del Tratamiento , Estados Unidos/epidemiología
15.
Am J Ophthalmol ; 153(5): 856-60, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22265150

RESUMEN

PURPOSE: To describe the long-term surgical course of patients with open globe injury. DESIGN: Retrospective case series. METHODS: Patients with open globe injuries (848 in total) treated surgically at the Massachusetts Eye and Ear Infirmary between 2000 and 2009 were retrospectively reviewed. Data from presentation, initial repair, and follow-up surgery were analyzed. RESULTS: Among 848 injuries, 1415 surgical procedures were performed. The mean follow-up time was 19.7 months, including 6017 visits. On average, patients required 1.7 surgeries and 7.1 follow-up visits. Factors predicting follow-up surgery included more severe ocular trauma score, worse prerepair visual acuity, retinal hemorrhage, anterior vitrectomy at primary repair, pars plana vitrectomy at primary repair, and lensectomy at primary repair. Patients with zone II injury, hemorrhagic choroidal detachment, and a history of previous ocular surgery tended to require follow-up surgery less frequently. Patients requiring a second surgery tended to have worse visual acuity at presentation and postrepair. Postoperative visual outcomes were worse for patients who underwent vitreoretinal follow-up surgery, likely because of mechanism of injury. Variables associated with inferior visual outcome were worse prerepair visual acuity, postoperative afferent pupillary defect (APD), old age, scleral laceration, and retinal detachment. CONCLUSION: Open globe injuries require significant surgical follow-up. Patients requiring multiple operations tended to have worse postoperative visual acuity. Patients who underwent vitreoretinal surgery had overall worse visual outcomes. While the first year of surveillance appears to be pivotal in the course of an open globe injury, these patients can expect long-term care from comprehensive and subspecialty ophthalmologists.


Asunto(s)
Lesiones de la Cornea , Lesiones Oculares Penetrantes/cirugía , Procedimientos Quirúrgicos Oftalmológicos , Esclerótica/lesiones , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Enucleación del Ojo , Femenino , Estudios de Seguimiento , Humanos , Lactante , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Tiempo , Trastornos de la Visión/rehabilitación , Agudeza Visual/fisiología , Adulto Joven
16.
Hum Genomics ; 5(6): 538-68, 2011 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-22155603

RESUMEN

Vitamin D has been shown to have anti-angiogenic properties and to play a protective role in several types of cancer, including breast, prostate and cutaneous melanoma. Similarly, vitamin D levels have been shown to be protective for risk of a number of conditions, including cardiovascular disease and chronic kidney disease, as well as numerous autoimmune disorders such as multiple sclerosis, inflammatory bowel diseases and type 1 diabetes mellitus. A study performed by Parekh et al. was the first to suggest a role for vitamin D in age-related macular degeneration (AMD) and showed a correlation between reduced serum vitamin D levels and risk for early AMD. Based on this study and the protective role of vitamin D in diseases with similar pathophysiology to AMD, we examined the role of vitamin D in a family-based cohort of 481 sibling pairs. Using extremely phenotypically discordant sibling pairs, initially we evaluated the association of neovascular AMD and vitamin D/sunlight-related epidemiological factors. After controlling for established AMD risk factors, including polymorphisms of the genes encoding complement factor H (CFH) and age-related maculopathy susceptibility 2/HtrA serine peptidase (ARMS2/HTRA1), and smoking history, we found that ultraviolet irradiance was protective for the development of neovascular AMD (p = 0.001). Although evaluation of serum vitamin D levels (25-hydroxyvitamin D [25(OH)D]) was higher in unaffected individuals than in their affected siblings, this finding did not reach statistical significance. Based on the relationship between ultraviolet irradiance and vitamin D production, we employed a candidate gene approach for evaluating common variation in key vitamin D pathway genes (the genes encoding the vitamin D receptor [VDR]; cytochrome P450, family 27, subfamily B, polypeptide 1 [CYP27B1]; cytochrome P450, family 24, subfamily A, polypeptide 1 [CYP24A1]; and CYP27A1) in this same family-based cohort. Initial findings were then validated and replicated in the extended family cohort, an unrelated case-control cohort from central Greece and a prospective nested case-control population from the Nurse's Health Study and Health Professionals Follow-Up Studies, which included patients with all subtypes of AMD for a total of 2,528 individuals. Single point variants in CYP24A1 (the gene encoding the catabolising enzyme of the vitamin D pathway) were demonstrated to influence AMD risk after controlling for smoking history, sex and age in all populations, both separately and, more importantly, in a meta-analysis. This is the first report demonstrating a genetic association between vitamin D metabolism and AMD risk. These findings were also supplemented with expression data from human donor eyes and human retinal cell lines. These data not only extend previous biological studies in the AMD field, but further emphasise common antecedents between several disorders with an inflammatory/immunogenic component such as cardiovascular disease, cancer and AMD.


Asunto(s)
Predisposición Genética a la Enfermedad , Degeneración Macular/etiología , Degeneración Macular/patología , Polimorfismo Genético/genética , Biología de Sistemas , Deficiencia de Vitamina D/complicaciones , Vitamina D/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Casos y Controles , Factor H de Complemento/genética , Estudios Epidemiológicos , Femenino , Estudios de Seguimiento , Genotipo , Grecia/epidemiología , Humanos , Degeneración Macular/epidemiología , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Prospectivos , Receptores de Calcitriol/genética , Factores de Riesgo , Hermanos , Deficiencia de Vitamina D/epidemiología , Deficiencia de Vitamina D/genética
17.
Am J Ophthalmol ; 152(2): 229-33, 2011 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-21621188

RESUMEN

PURPOSE: To characterize the clinical course of cataract wound dehiscence. DESIGN: Retrospective, comparative case series. METHODS: Charts of open globe injuries (848 injuries in 846 patients) treated surgically at the Massachusetts Eye and Ear Infirmary between 2000 and 2009 were retrospectively reviewed. Time from original surgery to wound dehiscence, type of initial surgery, Ocular Trauma Score, age, gender, mechanism of injury, and visual acuity were analyzed. RESULTS: Of 846 patients with 848 open globe injuries, 63 experienced cataract wound dehiscence. The majority of these cataract wounds (89%) were extracapsular cataract extraction (ECCE), with only 7 (11%) phacoemulsification wounds. The mean patient age in the wound rupture group was 78.2 years. Female patients comprised the majority (67%) of this subpopulation. The most common mechanisms of injury were fall (65%), blunt trauma (23%), and motor vehicle accident (7%). The median raw ocular trauma score was 47 in wound dehiscence patients. Visual acuity at presentation was light perception in the wound dehiscence group. The best postoperative visual acuity was significantly worse in the wound dehiscence group (hand motion) than in the remaining patients (20/40; P=.0002). When considering the phacoemulsification patients alone, these patients fared much better, with a median postoperative vision of 20/60. CONCLUSIONS: Despite recent advances in cataract surgery, wound dehiscence remains a significant source of visual disability, mainly in the geriatric population. Rupture ECCE wound patients have a poor visual prognosis. Fortunately, patients with phacoemulsification site dehiscence appear to regain the majority of their vision after open globe repair.


Asunto(s)
Extracción de Catarata , Lesiones Oculares Penetrantes/epidemiología , Esclerótica/lesiones , Dehiscencia de la Herida Operatoria/epidemiología , Adolescente , Adulto , Distribución por Edad , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Lesiones Oculares Penetrantes/diagnóstico , Lesiones Oculares Penetrantes/cirugía , Femenino , Humanos , Lactante , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Distribución por Sexo , Dehiscencia de la Herida Operatoria/diagnóstico , Dehiscencia de la Herida Operatoria/cirugía , Índices de Gravedad del Trauma , Agudeza Visual/fisiología , Adulto Joven
18.
Am J Surg ; 201(5): 695-9, 2011 May.
Artículo en Inglés | MEDLINE | ID: mdl-20851376

RESUMEN

BACKGROUND: Malignant eccrine spiradenoma is an aggressive sweat gland tumor with poorly understood behavior and no currently accepted therapeutic regimen. METHODS: An individual patient data meta-analysis with Kaplan­Meier survival curves was performed on 72 reported cases of malignant eccrine spiradenoma. RESULTS: In 35 patients with no distant metastasis, local resection resulted in 100% disease-free survival. Of 7 patients with lymph node but no distant metastasis treated with surgical resection and lymph node dissection, 6 patients remained disease-free at final follow-up evaluation. For the 24 cases with confirmed distant metastatic disease, patient survival did not significantly differ between local resection and surgery with adjuvant chemoradiotherapy (P = .8763). CONCLUSIONS: Heightened awareness is recommended among surgeons likely to treat this entity. An aggressive surgical approach is supported in the absence of metastasis. When lymph nodes are not clinically involved, sentinel node may have a role followed by lymph node dissection in patients with a positive node.


Asunto(s)
Acrospiroma , Neoplasias de las Glándulas Sudoríparas , Acrospiroma/diagnóstico , Acrospiroma/epidemiología , Acrospiroma/terapia , Terapia Combinada , Supervivencia sin Enfermedad , Humanos , Morbilidad/tendencias , Tasa de Supervivencia/tendencias , Neoplasias de las Glándulas Sudoríparas/diagnóstico , Neoplasias de las Glándulas Sudoríparas/epidemiología , Neoplasias de las Glándulas Sudoríparas/terapia , Estados Unidos/epidemiología
19.
Ophthalmology ; 118(1): 156-9, 2011 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-20709403

RESUMEN

PURPOSE: To characterize the pattern of ocular trauma in the geriatric population. DESIGN: Retrospective, comparative case series. PARTICIPANTS: Eight hundred forty-six consecutive patients comprising 848 open globe injuries, of which 166 injuries occurred in geriatric patients (defined as 65 years old or older at the time of injury), with the remaining patients serving as control subjects. METHODS: Charts of open globe injuries (848 in total) treated surgically at the Massachusetts Eye and Ear Infirmary between January 2000 and April 2009 were retrospectively reviewed. MAIN OUTCOME MEASURES: Ocular Trauma Score, age, gender, mechanism of injury, zone of injury, site of injury, time of day, visual acuity at presentation, and best post-repair visual acuity were analyzed. RESULTS: Of 848 open globe injuries, 166 occurred in the geriatric population. The mean patient age in the geriatric group was 79.8 years. Females comprised most (58%) of this subpopulation. The most common mechanisms of injury were fall (65%), blunt trauma (16%), and motor vehicle accident (6%). The geriatric traumas tended to happen in late morning or late at night. There were no cases of endophthalmitis and fewer instances of enucleation in this group. The median raw Ocular Trauma Score was 47 in the geriatric population, compared with 70 in the younger subset (P < 0.0001). The injuries more often were in zones II and III in the geriatric population compared with the nongeriatric population (P < 0.0001). The geriatric patients were much more likely to have undergone previous intraocular surgery (P < 0.0001), which consisted of primarily cataract procedures. Visual acuity at presentation was significantly worse in the geriatric population than the nongeriatric population (P<0.0001). Similarly, the best postoperative visual acuity was worse in the elderly group than the younger group (P < 0.0001). CONCLUSIONS: The elderly represent a unique, yet neglected ocular trauma population. The pattern of ophthalmic injury and outcome differs greatly between the geriatric and nongeriatric populations. A better understanding of these injuries is necessary to improve prevention and treatment strategies for potentially devastating open globe injuries in this susceptible population.


Asunto(s)
Lesiones Oculares Penetrantes/epidemiología , Evaluación Geriátrica/estadística & datos numéricos , Adolescente , Adulto , Distribución por Edad , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Lesiones Oculares Penetrantes/clasificación , Lesiones Oculares Penetrantes/cirugía , Femenino , Humanos , Lactante , Masculino , Massachusetts/epidemiología , Persona de Mediana Edad , Procedimientos Quirúrgicos Oftalmológicos , Estudios Retrospectivos , Factores de Tiempo , Agudeza Visual/fisiología , Adulto Joven
20.
Med Teach ; 33(1): 76-7, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21182389

RESUMEN

Music permeates the medical literature regarding disease therapy. However, there are only few articles concerning music as a tool for development of cultural competency and interpersonal relations. We share our experience of forming a musical act of students and faculty at a medical school. We believe that this group has encouraged medical humanism and enhanced communication in the learning environment.


Asunto(s)
Música , Facultades de Medicina , Competencia Cultural , Humanos , Relaciones Interpersonales
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...