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1.
Proc Natl Acad Sci U S A ; 121(15): e2304671121, 2024 Apr 09.
Artículo en Inglés | MEDLINE | ID: mdl-38564640

RESUMEN

Contingency tables, data represented as counts matrices, are ubiquitous across quantitative research and data-science applications. Existing statistical tests are insufficient however, as none are simultaneously computationally efficient and statistically valid for a finite number of observations. In this work, motivated by a recent application in reference-free genomic inference [K. Chaung et al., Cell 186, 5440-5456 (2023)], we develop Optimized Adaptive Statistic for Inferring Structure (OASIS), a family of statistical tests for contingency tables. OASIS constructs a test statistic which is linear in the normalized data matrix, providing closed-form P-value bounds through classical concentration inequalities. In the process, OASIS provides a decomposition of the table, lending interpretability to its rejection of the null. We derive the asymptotic distribution of the OASIS test statistic, showing that these finite-sample bounds correctly characterize the test statistic's P-value up to a variance term. Experiments on genomic sequencing data highlight the power and interpretability of OASIS. Using OASIS, we develop a method that can detect SARS-CoV-2 and Mycobacterium tuberculosis strains de novo, which existing approaches cannot achieve. We demonstrate in simulations that OASIS is robust to overdispersion, a common feature in genomic data like single-cell RNA sequencing, where under accepted noise models OASIS provides good control of the false discovery rate, while Pearson's [Formula: see text] consistently rejects the null. Additionally, we show in simulations that OASIS is more powerful than Pearson's [Formula: see text] in certain regimes, including for some important two group alternatives, which we corroborate with approximate power calculations.


Asunto(s)
Genoma , Genómica , Mapeo Cromosómico
2.
Nature ; 569(7758): 663-671, 2019 05.
Artículo en Inglés | MEDLINE | ID: mdl-31142858

RESUMEN

Type 2 diabetes mellitus (T2D) is a growing health problem, but little is known about its early disease stages, its effects on biological processes or the transition to clinical T2D. To understand the earliest stages of T2D better, we obtained samples from 106 healthy individuals and individuals with prediabetes over approximately four years and performed deep profiling of transcriptomes, metabolomes, cytokines, and proteomes, as well as changes in the microbiome. This rich longitudinal data set revealed many insights: first, healthy profiles are distinct among individuals while displaying diverse patterns of intra- and/or inter-personal variability. Second, extensive host and microbial changes occur during respiratory viral infections and immunization, and immunization triggers potentially protective responses that are distinct from responses to respiratory viral infections. Moreover, during respiratory viral infections, insulin-resistant participants respond differently than insulin-sensitive participants. Third, global co-association analyses among the thousands of profiled molecules reveal specific host-microbe interactions that differ between insulin-resistant and insulin-sensitive individuals. Last, we identified early personal molecular signatures in one individual that preceded the onset of T2D, including the inflammation markers interleukin-1 receptor agonist (IL-1RA) and high-sensitivity C-reactive protein (CRP) paired with xenobiotic-induced immune signalling. Our study reveals insights into pathways and responses that differ between glucose-dysregulated and healthy individuals during health and disease and provides an open-access data resource to enable further research into healthy, prediabetic and T2D states.


Asunto(s)
Biomarcadores/metabolismo , Biología Computacional , Diabetes Mellitus Tipo 2/microbiología , Microbioma Gastrointestinal , Interacciones Microbiota-Huesped/genética , Estado Prediabético/microbiología , Proteoma/metabolismo , Transcriptoma , Adulto , Anciano , Antibacterianos/administración & dosificación , Biomarcadores/análisis , Estudios de Cohortes , Conjuntos de Datos como Asunto , Diabetes Mellitus Tipo 2/genética , Diabetes Mellitus Tipo 2/metabolismo , Femenino , Glucosa/metabolismo , Voluntarios Sanos , Humanos , Inflamación/metabolismo , Vacunas contra la Influenza/inmunología , Insulina/metabolismo , Resistencia a la Insulina , Estudios Longitudinales , Masculino , Microbiota/fisiología , Persona de Mediana Edad , Estado Prediabético/genética , Estado Prediabético/metabolismo , Infecciones del Sistema Respiratorio/genética , Infecciones del Sistema Respiratorio/metabolismo , Infecciones del Sistema Respiratorio/microbiología , Infecciones del Sistema Respiratorio/virología , Estrés Fisiológico , Vacunación/estadística & datos numéricos
3.
Oncologist ; 29(3): 263-269, 2024 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-38227581

RESUMEN

BACKGROUND: Lacrimal gland adenoid cystic carcinoma (LGACC) has historically been associated with a poor prognosis even with localized disease, with a survival of 56% at 5 years. In 1988, we treated the first patient with neoadjuvant intra-arterial cytoreductive chemotherapy (IACC). Since then, we have used this protocol as the standard approach. We aim to analyze the outcomes of patients with LGACC treated with the protocol and compare them to a population-based cohort to assess if IACC can improve survival. METHODS: We prospectively assessed all non-metastatic patients with LGACC treated with IACC at a single institution between 1988 and 2021. For a comparison group, we identified all non-metastatic patients with LGACC treated with excision from the Surveillance, Epidemiology, and End Results (SEER) registry. We calculated disease-specific survival using the Kaplan-Meier and Cox proportional-hazards modeling methods. RESULTS: Thirty-five non-metastatic patients with LGACC treated with IACC were identified at a single institution, and 64 patients with non-metastatic LGACC treated with excision were identified in the SEER database. The 5- and 10-year disease-specific survival rates for patients treated with IACC were 84% (95%CI 71-97) and 76% (95%CI 60-92), respectively. While the 5- and 10-year disease-specific survival rates for the population-based cohort were 72% (95%CI 62-82) and 46% (95%CI 32-60). The survival analysis favored IACC, with a 60% lower risk of death (HR: 0.4; 95%CI 0.2-0.9). CONCLUSION: IACC improves disease-specific survival in comparison to a population-based cohort treated with excision. Additional patients treated with IACC at multiple institutions are required to provide further external validity.


Asunto(s)
Carcinoma Adenoide Quístico , Neoplasias del Ojo , Neoplasias de Cabeza y Cuello , Enfermedades del Aparato Lagrimal , Aparato Lagrimal , Humanos , Carcinoma Adenoide Quístico/tratamiento farmacológico , Aparato Lagrimal/patología , Terapia Neoadyuvante , Procedimientos Quirúrgicos de Citorreducción , Estudios Retrospectivos , Enfermedades del Aparato Lagrimal/tratamiento farmacológico , Enfermedades del Aparato Lagrimal/patología , Neoplasias del Ojo/tratamiento farmacológico , Neoplasias del Ojo/patología
4.
Ophthalmic Plast Reconstr Surg ; 40(2): 206-211, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-37972978

RESUMEN

PURPOSE: Lacrimal gland adenoid cystic carcinoma (LGACC) is a rare orbital malignancy with devastating lethality. Neoadjuvant intra-arterial chemotherapy (IACC) has demonstrated cytoreductive effects on LGACC macroscopically, but limited studies have examined cellular and molecular determinants of the cytoreductive effect. This post hoc study assessed apoptotic marker expression on excised tumor specimens after neoadjuvant IACC and globe-sparing resection, emphasizing the examination of tumor margins. METHODS: This retrospective study identified LGACC specimens resected in a globe-sparing technique after neoadjuvant IACC by reviewing the Florida Lions Ocular Pathology database at Bascom Palmer Eye Institute. Histopathology slides of the specimens were re-examined to confirm the diagnosis and identify the tumor margin. Immunofluorescent staining was performed for apoptotic markers, including P53, cleaved caspase-3, cleaved PARP-1, and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL). Positive expression was determined by comparison to the negative control. RESULTS: Tumor specimens from 5 patients met inclusion criteria. All 5 cases were positive at the center and the margin for TUNEL, p53, and cleaved caspase-3. One case did not show positive expression of cleaved PARP-1 at the margin but was positive for the other apoptotic markers. CONCLUSIONS: This post hoc study demonstrated positive staining for multiple apoptotic markers in post-IACC tumor specimens at the tumor center and margin. Apoptotic marker expression along the margins of post-treatment specimens is important, as it may offer surrogate information to speculate on the state of residual cancer cells adjacent to the excision margin inadvertently remaining in the orbit.


Asunto(s)
Carcinoma Adenoide Quístico , Neoplasias del Ojo , Aparato Lagrimal , Humanos , Carcinoma Adenoide Quístico/tratamiento farmacológico , Carcinoma Adenoide Quístico/cirugía , Caspasa 3 , Márgenes de Escisión , Inhibidores de Poli(ADP-Ribosa) Polimerasas , Estudios Retrospectivos , Proteína p53 Supresora de Tumor , Neoplasias del Ojo/tratamiento farmacológico
5.
Orbit ; 43(1): 90-94, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37199572

RESUMEN

PURPOSE: To evaluate the incidence of nasocutaneous fistula (NCF) development, following en bloc resection of lacrimal outflow system malignancies (LOSM), and describe the methods of surgical repair. METHODS: Retrospective review of all patients who underwent resection of LOSM with reconstruction and post-treatment protocol at the University of Miami between 1997 and 2021. RESULTS: Of the 23 included patients, 10 (43%) developed postoperative NCF. All NCFs developed within one year of surgical resection or completion of radiation therapy. NCF was seen more frequently in patients who underwent adjuvant radiation therapy and those who had reconstruction of the orbital wall with titanium implants. All patients underwent at least one revisional surgery to close the NCF, including local flap transposition (9/10), paramedian forehead flap (5/10), pericranial flap (1/10), nasoseptal flap (2/10), and microvascular free flap (1/10). Local tissue transfer, pericranial, paramedian, and nasoseptal forehead flaps failed in most cases. Two patients had long-term closure; one patient who underwent a paramedian flap and a second who underwent a radial forearm free flap, suggesting that well-vascularized flaps may be the most viable option for repair. CONCLUSIONS: NCF is a known complication, following en bloc resection of lacrimal outflow system malignancies. Risk factors for formation may include adjuvant radiation therapy and use of titanium implants for reconstruction. Surgeons should consider utilizing robust vascular-pedicled flaps or microvascular free flaps for repair of NCF in this clinical scenario.


Asunto(s)
Carcinoma de Células Escamosas , Procedimientos de Cirugía Plástica , Rinoplastia , Humanos , Titanio , Procedimientos de Cirugía Plástica/efectos adversos , Colgajos Quirúrgicos/irrigación sanguínea , Colgajos Quirúrgicos/patología , Colgajos Quirúrgicos/cirugía , Carcinoma de Células Escamosas/patología , Estudios Retrospectivos
6.
Am J Hematol ; 98(1): 148-158, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-35560252

RESUMEN

Comprehensive information on clinical features and long-term outcomes of primary conjunctival extranodal marginal zone lymphoma (PCEMZL) is scarce. We present a large single-institution retrospective study of 72 patients. The median age was 64 years, and 63.9% were female. Stage I was present in 87.5%. Radiation therapy (RT) alone was the most common treatment (70.8%). Complete response (CR) was 87.5%, and 100% in RT-treated patients. With a median follow-up of 6.7 years, relapse/progression and death occurred in 19.4% each, with one relapse within the RT field. The 10-year progression-free survival (PFS) and overall survival (OS) were 68.4% (95% CI 52.8%-79.8%) and 89.4% (95% CI 77.4%-95.2%), respectively. The 10-year rate for time to progression from diagnosis was 22.5% (95% CI 11.6%-35.7%). The 10-year PFS and OS of MALT-IPI 0 versus 1-2 were 83.3% versus 51.3%, (p = .022) and 97.6% versus 76.6%, (p = .0052), respectively. The following characteristics were associated with shorter survival: age > 60 years (PFS: HR = 2.93, 95% CI 1.08-7.95; p = .035, OS: HR = 9.07, 95% CI 1.17-70.26; p = .035) and MALT-IPI 1-2 (PFS: HR = 2.67, 95% CI 1.12-6.31; p = .027, OS: HR = 6.64, 95% CI 1.45-30.37; p = .015). CR following frontline therapy was associated with longer PFS (HR = 0.13, 95% CI 0.04-0.45; p = .001), but not OS. Using the Fine and Gray regression model with death without relapse/progression as a competing risk, RT and CR after frontline therapy were associated with lower risk of relapse (SHR = 0.34, 95% CI 0.12-0.96 p = .041 and SHR = 0.11, 95% CI 0.03-0.36; p < .001, respectively). Patients with PCEMZL treated with frontline RT exhibit excellent long-term survival, and the MALT-IPI score appropriately identifies patients at risk for treatment failure.


Asunto(s)
Linfoma de Células B de la Zona Marginal , Recurrencia Local de Neoplasia , Humanos , Femenino , Persona de Mediana Edad , Masculino , Supervivencia sin Enfermedad , Estudios Retrospectivos , Supervivencia sin Progresión , Pronóstico
7.
Nucleic Acids Res ; 49(18): 10382-10396, 2021 10 11.
Artículo en Inglés | MEDLINE | ID: mdl-34478548

RESUMEN

Architectural proteins alter the shape of DNA. Some distort the double helix by introducing sharp kinks. This can serve to relieve strain in tightly-bent DNA structures. Here, we design and test artificial architectural proteins based on a sequence-specific Transcription Activator-like Effector (TALE) protein, either alone or fused to a eukaryotic high mobility group B (HMGB) DNA-bending domain. We hypothesized that TALE protein binding would stiffen DNA to bending and twisting, acting as an architectural protein that antagonizes the formation of small DNA loops. In contrast, fusion to an HMGB domain was hypothesized to generate a targeted DNA-bending architectural protein that facilitates DNA looping. We provide evidence from Escherichia coli Lac repressor gene regulatory loops supporting these hypotheses in living bacteria. Both data fitting to a thermodynamic DNA looping model and sophisticated molecular modeling support the interpretation of these results. We find that TALE protein binding inhibits looping by stiffening DNA to bending and twisting, while the Nhp6A domain enhances looping by bending DNA without introducing twisting flexibility. Our work illustrates artificial approaches to sculpt DNA geometry with functional consequences. Similar approaches may be applicable to tune the stability of small DNA loops in eukaryotes.


Asunto(s)
ADN Bacteriano/metabolismo , Proteínas de Unión al ADN/metabolismo , Proteínas de Escherichia coli/metabolismo , Escherichia coli/genética , Regulación Bacteriana de la Expresión Génica , Operón Lac , Conformación de Ácido Nucleico , Regiones Promotoras Genéticas , Unión Proteica
8.
Ophthalmic Plast Reconstr Surg ; 39(5): 449-453, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36804335

RESUMEN

PURPOSE: To present four female-to-male (FTM) transgender patients on testosterone therapy diagnosed with idiopathic intracranial hypertension (IIH). METHODS: The authors report 4 consecutive FTM transgender patients on exogenous testosterone diagnosed with IIH at a single institution. RESULTS: Patient 1 presented with progressive blurred vision and a central scotoma 10 weeks after starting testosterone cypionate injections for hormonal gender transition. Bilateral grade 5 papilledema was present; the patient underwent bilateral optic nerve sheath fenestration with improved vision and resolution of edema. Patient 2 presented with transient vision loss, pulsatile tinnitus, and blurred vision 13 months after starting testosterone cypionate injections. The patient had grade 4 and 3 disc edema of the right and left eyes, respectively. Patient 3 presented with headaches and pulsatile tinnitus and was on testosterone injections at an unknown dose. The examination revealed grade 1 and 2 disc edema of the right and left eyes, respectively. Patient 4 presented with decreased vision, transient visual obscurations, and daily migraines while using topical testosterone gel every other day. Color vision was reduced, and lumbar puncture revealed elevated intracranial pressure. All patients had neuroimaging findings consistent with increased intracranial pressure. CONCLUSIONS: Testosterone therapy plays an essential role in FTM hormonal transitioning and may play a role in IIH. Patients undergoing testosterone therapy for gender transition should be informed of the possibility of developing IIH while on treatment, with obesity possibly increasing this risk. Comprehensive eye examinations should be considered in these patients before initiating hormone therapy.


Asunto(s)
Papiledema , Seudotumor Cerebral , Acúfeno , Personas Transgénero , Humanos , Masculino , Femenino , Seudotumor Cerebral/inducido químicamente , Seudotumor Cerebral/diagnóstico , Papiledema/inducido químicamente , Papiledema/diagnóstico , Trastornos de la Visión/diagnóstico , Testosterona/efectos adversos , Edema
9.
Ophthalmic Plast Reconstr Surg ; 39(2): e55-e58, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36735326

RESUMEN

Infectious scleritis is a potentially devastating condition that can result in severe vision loss. When traditional management fails, a subpalpebral antibiotic lavage system (SAL) can be considered to bathe the infected area with a high volume and concentration of antibiotics. Several reports show that this method can be curative for infectious scleritis, otherwise refractory to care. However, surgical approaches for this technique are either not well described, advocate for transecting the levator aponeurosis, or do not expose the entire width of the superior fornix, which can lead to postoperative ptosis. The authors describe a case where a novel approach was utilized, using a fenestrated angiocather in the superior lateral fornix, to maximize outcomes and minimize postoperative complications. In the setting of infectious scleritis refractory to traditional management, a SAL can be safely and effectively placed with the technique detailed in this report.


Asunto(s)
Blefaroplastia , Blefaroptosis , Escleritis , Humanos , Antibacterianos/uso terapéutico , Irrigación Terapéutica , Blefaroptosis/cirugía , Blefaroplastia/métodos
10.
Ophthalmic Plast Reconstr Surg ; 39(4): 381-385, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36852832

RESUMEN

PURPOSE: To assess the sensitivity and specificity of superior visual field tests administered in virtual reality (VR) with eye tracking (VR-ET) and without eye tracking (VR 0 ) for the fulfillment of insurance coverage criteria for functional upper eyelid surgery as compared with standard automated perimetry (SAP). METHODS: This prospective cross-sectional study included 78 eyes from 41 patients with ptosis, brow ptosis, and dermatochalasis undergoing functional upper eyelid surgery evaluation. Participants underwent serial superior visual field tests using SAP and VR 0 or VR-ET in randomized order. Fulfillment of insurance coverage criteria for blepharoplasty was defined as a 30% increase in the grid seen from the untaped to the taped state. The main outcome measure was the sensitivity and specificity of VR 0 , VR-ET, and overall VR in meeting insurance coverage criteria as compared with SAP. RESULTS: VR had a sensitivity of 84.1% and specificity of 67.6%, with no significant difference between VR 0 and VR-ET. SAP agreed on insurance coverage criteria fulfillment with VR 0 in 28 (71.8%) eyes and with VR-ET in 32 (82.1%) eyes. Insurance coverage criteria fulfillment rates varied significantly by diagnosis on SAP ( p = 0.012) but not VR ( p = 0.059). CONCLUSIONS: VR may be an alternative to SAP for functional upper eyelid surgery evaluation. Future studies are needed to determine differences in patient satisfaction, testing and waiting time, and test-retest reliability between VR and SAP.


Asunto(s)
Pruebas del Campo Visual , Campos Visuales , Humanos , Proyectos Piloto , Estudios Prospectivos , Reproducibilidad de los Resultados , Tecnología de Seguimiento Ocular , Estudios Transversales , Párpados/cirugía
11.
Orbit ; 42(4): 445-449, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35129053

RESUMEN

A 19-year-old with blunt trauma and repeated nose blowing presented with orbital emphysema and orbital compartment syndrome. Orbital emphysema is the abnormal presence of air within the orbit, typically secondary to trauma. Most cases will resolve with observation alone, however orbital compartment syndrome is a feared complication that necessitates urgent decompression. A superior fornix, trans-conjunctival approach was safely utilized to decompress the orbit while avoiding unwanted complications. Various decompression techniques have previously been described, most of which describe trans-palpebral approaches. The key safety benefit to the trans-conjunctival approach is direct visualization of the needle tip adjacent to the superior fornix, therefore posterior to the equator of the globe. With the needle positioned parallel to the curvature of the globe at the equator, the posterior sclera surface curves away from the tip, rendering it difficult to pierce the globe. In addition, the needle needs to be advanced only 3-4 millimeters and traverses only the conjunctiva and Tenon's to enter the central surgical space - the most direct route to the air pocket. The trans-conjunctival approach lowers the risk of damage to eyelid neurovascular structures and is less painful.


Asunto(s)
Enfisema , Enfermedades Orbitales , Humanos , Adulto Joven , Adulto , Enfisema/etiología , Enfisema/cirugía , Enfermedades Orbitales/etiología , Enfermedades Orbitales/cirugía , Órbita/cirugía , Conjuntiva/cirugía , Descompresión Quirúrgica/métodos
12.
Orbit ; 42(2): 148-156, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35298320

RESUMEN

PURPOSE: To examine the clinical and histopathologic characteristics of lacrimal gland biopsies at a tertiary academic center. METHODS: A retrospective chart review of patients undergoing lacrimal gland biopsy or excision between 1962 and 2017 was performed via the ocular pathology specimen log. All cases were reviewed for demographics, clinical presentation, and histopathologic diagnoses. RESULTS: Four hundred and two eyes in 356 patients were included in the analysis. Median age was 49 (range 5-91) with a female predominance (255, 72%, p < .001). Most had unilateral involvement (308, 86.5%) and visual acuity of 20/50 or better (332 eyes, 83%). Limitation in extraocular motility was present in 71 eyes (18%), relative afferent pupillary defect in 10 eyes (2.5%), and intraocular pressure 20 mmHg or above in 80 eyes (20%). The pre-operative radiology report commented on the enlargement of the lacrimal gland in 236 eyes (58.7%), and lack thereof in 73 eyes (18.2%). The most common histopathologic diagnoses were nonspecific inflammation or orbital pseudotumor (170, 42%), lymphoma (65, 16%), pleomorphic adenoma (22, 5.5%), adenoid cystic carcinoma (19, 4.7%), granulomatous inflammation (19, 4.7%), and normal lacrimal gland (16, 4%). Three hundred and seven cases were benign (76%) and 95 malignant (24%). The biopsy specimen was diagnostic in 343 (85%), and non-diagnostic in 59 (15%). CONCLUSIONS: This is a comprehensive review of one of the largest ocular pathology databases of lacrimal gland lesions. This study confirms the wide range of inflammatory and neoplastic conditions affecting the lacrimal gland and highlights the nuances of histopathologic diagnoses and diagnostic yield of biopsies in clinical practice.


Asunto(s)
Adenoma Pleomórfico , Neoplasias del Ojo , Enfermedades del Aparato Lagrimal , Aparato Lagrimal , Humanos , Femenino , Persona de Mediana Edad , Masculino , Aparato Lagrimal/patología , Enfermedades del Aparato Lagrimal/cirugía , Estudios Retrospectivos , Inflamación , Adenoma Pleomórfico/patología , Biopsia , Neoplasias del Ojo/patología
13.
Ophthalmic Plast Reconstr Surg ; 38(3): e89-e92, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35093990

RESUMEN

The primary goal of nystagmus treatment is to improve visual function and quality of life. Current surgical interventions are limited by regression of effect, serious complications, and reliance on a null zone. Tse and colleagues in 2017 reported the use of a T-plate/suture fixation platform for globe stabilization to treat acquired nystagmus and oscillopsia without a null zone in a patient with bilateral internuclear ophthalmoplegia. However, the improvement in nystagmus was not objectively quantified. This case series reports 2 patients who underwent bilateral T-plate placement which resulted in immediate and sustained improvement of nystagmus objectively measured by videonystagmography.


Asunto(s)
Nistagmo Patológico , Trastornos de la Motilidad Ocular , Humanos , Nistagmo Patológico/cirugía , Trastornos de la Motilidad Ocular/etiología , Calidad de Vida , Titanio , Trastornos de la Visión/etiología
14.
Ophthalmic Plast Reconstr Surg ; 38(2): e44-e47, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34798653

RESUMEN

Adenoid cystic carcinoma of the lacrimal gland is an aggressive, malignant epithelial neoplasm. We report the case of a 30-year-old male with lacrimal gland adenoid cystic carcinoma treated with neoadjuvant intra-arterial chemotherapy through the internal carotid artery, followed by orbital exenteration and chemoradiation. Treatment response was evaluated using a novel combination of pre- and posttreatment genome sequencing coupled with immunohistochemical evaluation, which showed diffuse tumor apoptosis. A posttreatment decrease in variant allele frequency of the NOTCH1 mutation, and robust tumor cytoreduction on imaging, supports exploration of NOTCH1 analysis as a potential marker of cisplatin sensitivity. The use of genome sequencing and immunohistochemical evaluation could provide a more targeted therapeutic assessment of neoadjuvant intra-arterial chemotherapy in the management of lacrimal gland adenoid cystic carcinoma.


Asunto(s)
Carcinoma Adenoide Quístico , Neoplasias del Ojo , Enfermedades del Aparato Lagrimal , Aparato Lagrimal , Adulto , Carcinoma Adenoide Quístico/diagnóstico , Carcinoma Adenoide Quístico/tratamiento farmacológico , Carcinoma Adenoide Quístico/genética , Procedimientos Quirúrgicos de Citorreducción , Neoplasias del Ojo/diagnóstico , Neoplasias del Ojo/tratamiento farmacológico , Neoplasias del Ojo/genética , Humanos , Aparato Lagrimal/patología , Enfermedades del Aparato Lagrimal/diagnóstico , Enfermedades del Aparato Lagrimal/tratamiento farmacológico , Enfermedades del Aparato Lagrimal/patología , Masculino
15.
Ophthalmic Plast Reconstr Surg ; 37(3): e85-e88, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-32890118

RESUMEN

A 68-year-old man with a history of type 2 diabetes mellitus and kidney transplantation on chronic immunosuppression presented with right-sided proptosis and vision loss. He was hospitalized 4 months prior for invasive sinus aspergillosis. MRI revealed abnormal enhancement in the right orbital apex, inferior medial right orbit, anterior cranial fossa floor, and anterior aspect of the falx cerebri. The patient was successfully managed with extensive sinus surgery, bifrontal craniotomy with resection of dura, cribriform plate resection, and a right orbital apex exenteration. The globe and anterior orbital structures were preserved to cover the large surgical sinodural-orbital defect and avoid complex reconstructive surgery. Orbital perfusion was maintained by exploiting the robust anastomoses between branches of external carotid and ophthalmic artery.


Asunto(s)
Diabetes Mellitus Tipo 2 , Anciano , Craneotomía , Humanos , Masculino , Órbita/diagnóstico por imagen , Órbita/cirugía , Evisceración Orbitaria , Perfusión
16.
Ophthalmic Plast Reconstr Surg ; 37(3): 274-279, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-32890114

RESUMEN

PURPOSE: To assess whether exenteration specimens obtained after neoadjuvant intra-arterial cytoreductive chemotherapy (IACC) for adenoid cystic carcinoma of the lacrimal gland demonstrate significant ocular histopathologic alterations that might preclude future pursuit of globe-preserving therapy. METHODS: Retrospective histopathologic analysis of globes in IACC-treated exenteration specimens among the same cohort of patients whose survival outcomes have been reported. RESULTS: Twenty patients had specimens available. Nineteen globes revealed no abnormalities of the iris, ciliary body, lens, retinal pigment epithelium, choroid, or chorioretinal vasculature. Eighteen globes showed no optic nerve abnormalities. One globe from a patient who refused exenteration until adenoid cystic carcinoma recurrence supervened demonstrated optic nerve edema with a peripapillary hemorrhage and cotton wool spot, as well as hemorrhage and necrosis within an extraocular muscle. Eighteen globes showed no retinal abnormalities attributable to intra-arterial chemotherapy. Three globes showed incidental retinal findings: 2 globes contained 1 to 2 small peripheral retinal hemorrhages and 1 had a pigmented retinal hole. Seven demonstrated mild, chronic extraocular muscle inflammation, and 13 had unremarkable musculature. The single patient who received IACC via the internal carotid rather than the external carotid artery developed ophthalmic artery occlusion with orbital apex syndrome prior to exenteration, and diffuse necrosis and hemorrhage were evident histopathologically. CONCLUSIONS: Neoadjuvant IACC does not cause significant histopathologic damage to key ocular structures or compromise visual function in patients receiving intra-arterial chemotherapy through the external carotid artery. However, delivering chemotherapy through the internal carotid artery may result in visually significant thrombotic vascular events. The generally benign histopathological findings in these exenteration specimens support the concept of IACC delivery through the external carotid system as the cornerstone of a future globe-preserving strategy for lacrimal gland adenoid cystic carcinoma.


Asunto(s)
Carcinoma Adenoide Quístico , Neoplasias del Ojo , Enfermedades del Aparato Lagrimal , Aparato Lagrimal , Carcinoma Adenoide Quístico/tratamiento farmacológico , Procedimientos Quirúrgicos de Citorreducción , Neoplasias del Ojo/tratamiento farmacológico , Humanos , Enfermedades del Aparato Lagrimal/tratamiento farmacológico , Terapia Neoadyuvante , Recurrencia Local de Neoplasia , Órbita , Estudios Retrospectivos
17.
Ophthalmic Plast Reconstr Surg ; 37(6): e198-e202, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34284421

RESUMEN

Metastases of solid tumors to the eye and ocular adnexa are rare. Herein, the authors describe the clinical, histologic, and immunohistochemical findings of a patient with a history of adenocarcinoma of the colon and a uterine carcinosarcoma (malignant mixed Müllerian tumor) who presented with proptosis and decreased vision. Positive staining with PAX-8, p16 and negative reaction for CK20 and CDX2 helped to establish the uterine origin of the metastasis. This rare case demonstrates the utility of immunohistochemical probes, especially in patients with a complex oncological history, where multiple primary sources of the metastasis are in the differential diagnosis.


Asunto(s)
Carcinosarcoma , Neoplasias Orbitales , Neoplasias Uterinas , Biomarcadores de Tumor , Carcinosarcoma/diagnóstico , Femenino , Humanos , Inmunohistoquímica , Órbita , Neoplasias Orbitales/diagnóstico , Neoplasias Uterinas/diagnóstico
18.
Ophthalmic Plast Reconstr Surg ; 37(5): e158-e160, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33710034

RESUMEN

A 12-year-old boy presented with persistent proptosis and periorbital swelling after a school altercation. MRI revealed a mass in the right superonasal orbit extending along the orbital roof to the frontal bone and right frontal sinus, and intracranially to the dura of the right frontal lobe. Immunohistochemistry revealed CD20- and CD43-positive B cells consistent with a low-grade B-cell lymphoma. The patient was diagnosed with stage I ocular adnexal MALT lymphoma and treated with radiation therapy, followed by systemic chemotherapy. However, an enhancing orbital and intracranial mass remained on follow-up imaging, leading to a repeat biopsy, which was consistent with a diagnosis of Rosai-Dorfman disease. This is the first reported pediatric case of ocular adnexal MALT lymphoma with subsequent development of Rosai-Dorfman disease.


Asunto(s)
Exoftalmia , Histiocitosis Sinusal , Linfoma de Células B de la Zona Marginal , Niño , Histiocitosis Sinusal/diagnóstico , Humanos , Linfoma de Células B de la Zona Marginal/diagnóstico , Imagen por Resonancia Magnética , Masculino , Órbita
19.
Orbit ; 40(5): 435-443, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33722160

RESUMEN

A 34-year-old Caucasian male who underwent a ventricular shunt at age 21 presented with bilateral enophthalmos, poor eyelid-globe apposition and exposure keratopathy characteristic of silent brain syndrome. Progressive enophthalmos and corneal decompensation were documented in serial photographs and radiographic studies over 36 years. Over this period, no sequelae of shunt over-drainage were observed. A lumbar puncture at the last follow-up measured CSF opening pressure to be within the normal range. Additional systemic findings included pneumosinus dilatans, loss of adipose tissue in the temporalis fossa and atrophy of the dorsal interossei of the hand. Surgical interventions to preserve ocular function included insertion of orbital floor wedge and sheet implants, sheet orbital roof implants, and retroplacement of canthal tendons. This report chronicles the long-term clinical course of a patient with silent brain syndrome. The systemic changes suggest factors beyond low intracranial pressure may contribute to the pathogenesis of the condition in our patient.


Asunto(s)
Enoftalmia , Tomografía Computarizada por Rayos X , Adulto , Encéfalo , Humanos , Masculino , Órbita , Punción Espinal , Adulto Joven
20.
Orbit ; 40(2): 155-158, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32283962

RESUMEN

A 45-year-old man presented with a progressively enlarging left lower lateral eyelid lesion. The initial biopsy was inconclusive; however, a repeat biopsy 5 years later revealed infiltrative morpheaform basal cell carcinoma with sclerosis. Two years later, the patient presented with ophthalmoplegia of the left eye. Computed tomography illustrated a heterogeneous enhancing soft tissue mass in the inferolateral orbit with erosion into the globe. Despite treatment with vismodegib for 1 year, the lesion progressed to involve the entire left lower eyelid and corneal-scleral junction with adjacent maxillary sinus invasion. The patient tested positive for human immunodeficiency virus and underwent a left orbital exenteration followed by adjuvant radiotherapy. The patient remained stable with no evidence of recurrent disease or distant metastasis 2 years after exenteration. This rare case highlights a neglected basal cell carcinoma in those immunocompromised with histopathological correlation of the aggressive disease on to the globe.


Asunto(s)
Carcinoma Basocelular , Neoplasias Cutáneas , Anilidas/uso terapéutico , Carcinoma Basocelular/tratamiento farmacológico , Humanos , Huésped Inmunocomprometido , Masculino , Persona de Mediana Edad , Piridinas
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