200 research outputs found

    Reporte de caso: Estesioneuroblastoma en un equino

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    Esthesioneuroblastoma or olfactory neuroblastoma is a malignant tumor and is derived from the olfactory neuroepithelium, rare in domestic species and particularly in equines. The present report corresponds to a 13-year-old equine patient who presented chronic respiratory disease with two years of evolution and in which period developed unilateral proptosis. At necropsy, an intracranial mass of soft consistency was found, partially delimited in the aboral region within the left nasal cavity, which extended, partially compromising the bones, presphenoids, ethmoids and membranous structures in the ethmoidal and orbital region, causing the partial protrusion of the eyeball and face compression of the left cerebral hemisphere, secondary lesions in the maxillary tuberosity, pterygopalatine fossa and guttural pouch. The microscopic findings corresponded to a neoplastic process of neuroendocrine origin, whose cells are arranged in supported nests and separated by a fine fibrovascular stroma. The neoplastic process was confirmed by immunohistochemical (IHC) and histochemical (HQ) methods, where the tumor cells were positively marked by antibodies against synaptophysin, S-100 protein antigen, neurospecific enolase (NSE) and chromogranin A. Stained Grimelius argyrophil-argentaphin cells were identified. Based on the macroscopic and microscopic findings and the use of IHQ and HQ, the presence of esthesioneuroblastoma was established.El estesioneuroblastoma o neuroblastoma olfatorio es un tumor de carácter maligno y se deriva del neuroepitelio olfatorio, poco frecuente en especies domésticas y en particular en equinos. El presente reporte corresponde a un paciente equino de 13 años que presentó enfermedad respiratoria crónica con dos años de evolución y en cuyo periodo desarrolló proptosis unilateral. En la necropsia se encontró masa intracraneal de consistencia blanda, parcialmente delimitada en la región aboral dentro de la cavidad nasal izquierda, que se extendió comprometiendo parcialmente los huesos, preesfenoides, etmoides y estructuras membranosas en la región etmoidal y orbital, causando la protrusión parcial del globo ocular y compresión rostro aboral del hemisferio cerebral izquierdo, lesiones secundarias en la tuberosidad maxilar, fosa pterigopalatina y bolsa gutural. Los hallazgos microscópicos correspondieron a un proceso neoplásico de origen neuroendocrino, cuyas células se disponen en nidos soportadas y separadas por fino estroma fibrovascular. El proceso neoplásico se confirmó por métodos inmunohistoquímicos (IHQ) y de histoquímica (HQ), en donde las células tumorales se marcaron positivamente mediante anticuerpos contra sinaptofisina, antígeno de la proteína S-100, enolasa neuroespecifica (NSE) y cromogranina A. Con tinción Grimelius se identificaron células argirófilas-argentafines. Con base a los hallazgos macroscópicos, microscópicos y la utilización de IHQ y HQ se estableció la presencia de estesioneuroblastoma

    Propuesta en Supply Chain Management y Logística en la empresa Tienda Danny

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    Esta es un descripción de los procesos y operaciones logísticos en la cadena de suministro de la tienda Danny, para la integración de productos terminados o la venta al detal en el canal tienda a tienda, apoyado por la logística de los proveedores a partir de las solicitudes específicas, al igual se realiza observaciones y recomendaciones para el mejoramiento de: órdenes de pedidos, almacenamiento de inventarios y diseños estructurales.This is a description of the logistics processes and operations in the Danny store supply chain, for the integration of finished products or retail sales in the store-to-store channel, supported by the logistics of the suppliers from the requests Specific observations and recommendations are also made for the improvement of: order orders, inventory storage and structural designs

    Characterization of Pulmonary Metastases in Children With Hepatoblastoma Treated on Children\u27s Oncology Group Protocol AHEP0731 (The Treatment of Children With All Stages of Hepatoblastoma): A Report From the Children\u27s Oncology Group.

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    Purpose To determine whether the pattern of lung nodules in children with metastatic hepatoblastoma (HB) correlates with outcome. Methods Thirty-two patients with metastatic HB were enrolled on Children\u27s Oncology Group Protocol AHEP0731 and treated with vincristine and irinotecan (VI). Responders to VI received two additional cycles of VI intermixed with six cycles of cisplatin/fluorouracil/vincristine/doxorubicin (C5VD), and nonresponders received six cycles of C5VD alone. Patients were imaged after every two cycles and at the conclusion of therapy. All computed tomography scans and pathology reports were centrally reviewed, and information was collected regarding lung nodule number, size, laterality, timing of resolution, and pulmonary surgery. Results Among the 29 evaluable patients, only 31% met Response Evaluation Criteria in Solid Tumors (RECIST) for measurable metastatic disease. The presence of measurable disease by RECIST, the sum of nodule diameters greater than or equal to the cumulative cohort median size, bilateral disease, and ≥ 10 nodules were each associated with an increased risk for an event-free survival event ( P = .48, P = .08, P = .065, P = .03, respectively), with nodule number meeting statistical significance. Ten patients underwent pulmonary resection/metastasectomy at various time points, the benefit of which could not be determined because of small patient numbers. Conclusion Children with metastatic HB have a poor prognosis. Overall tumor burden may be an important prognostic factor for these patients. Lesions that fail to meet RECIST size criteria (ie, those \u3c 10 mm) at diagnosis may contain viable tumor, whereas residual lesions at the end of therapy may constitute eradicated tumor/scar tissue. Patients may benefit from risk stratification on the basis of the burden of lung metastatic disease at diagnosis

    Impact of central surgical review in a study of malignant germ cell tumors

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    BACKGROUND: Verification of surgical staging has received little attention in clinical oncology trials. Central surgical review was undertaken during a study of malignant pediatric germ cell tumors. METHODS: Children's Oncology Group study AGCT0132 included central surgical review during the study. Completeness of submitted data and confirmation of assigned stage were assessed. Review responses were: assigned status confirmed, assignment withheld pending review of additional information requested, or institutional assignment of stage disputed with explanation given. Changes in stage assignment were at the discretion of the enrolling institution. RESULTS: A total of 206 patients underwent central review. Failure to submit required data elements or need for clarification was noted in 40%. Disagreement with stage assignment occurred in 10% with 17/21 discordant patients reassigned to stage recommended by central review. Four ovarian tumor patients not meeting review criteria for Stage I remained in that stratum by institutional decision. Two-year event free survival in Stage I ovarian patients was 25% for discordant patients compared to 57% for those meeting Stage I criteria by central review. CONCLUSIONS: Central review of stage assignment improved complete data collection and assignment of correct tumor stage at study entry, and allowed for prompt initiation of chemotherapy in patients determined not to have Stage I disease

    Outcomes of Children With Low-Grade Gliomas in Low- and Middle-Income Countries: A Systematic Review

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    Purpose: Pediatric CNS tumors are increasingly a priority, particularly with the WHO designation of low-grade glioma (LGG) as one of six index childhood cancers. There are currently limited data on outcomes of pediatric patients with LGGs in low- and middle-income countries (LMICs). Methods: To better understand the outcomes of LGGs in LMICs, this systematic review interrogated nine literature databases. Results: The search identified 14,977 publications. Sixteen studies from 19 countries met the selection criteria and were included for data abstraction and analysis. Eleven studies (69%) were retrospective reviews from single institutions, and one (6%) captured institutional data prospectively. The studies captured a total of 957 patients with a median of 49 patients per study. Seven (44%) of the studies described the treatment modalities used. Of 373 patients for whom there was information, 173 (46%) had a gross total or near total resection, 109 (29%) had a subtotal resection, and 91 (24%) had only a biopsy performed. Seven studies, with a total of 476 patients, described the frequency of use of radiotherapy and/or chemotherapy in the cohorts: 83 of these patients received radiotherapy and 76 received chemotherapy. The 5-year overall survival ranged from 69.2% to 93.5%, although lower survival rates were reported at earlier time points. We identified limitations in the published studies with respect to the cohort sizes and methodologies. Conclusion: The included studies reported survival rates frequently exceeding 80%, although the ultimate number of studies was limited, pointing to the paucity of studies describing the outcomes of children with LGGs in LMICs. This study underscores the need for more robust data on outcomes in pediatric LGG

    Plan de mejora en el proceso de inducción y entrenamiento para los colaboradores del SENA

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    La inducción y el entrenamiento citado regularmente como uno de los eventos de vida más estresantes que experimentará una persona, comenzar un nuevo trabajo puede ser un momento abrumador. La experiencia que tiene un principiante en esos primeros días con su empresa es mucho más importante de lo que cree. La creación de un proceso de inducción sólido le permite adelantarse a muchos de los problemas que normalmente podría enfrentar, lo que le ahorrará mucho tiempo, dinero y estrés tanto a corto como a largo plazo. Además, las inducciones no tienen que ser una lista aparentemente interminable de pautas aburridas basadas en códigos de vestimenta y reglas de la oficina, son una oportunidad para inspirar a su nuevo empleado y hacerlo sentir seguro de que unirse a su empresa fue la decisión correcta. El presente estudio tiene como objetivo establecer la relación de inducción en el ejercicio laboral, el diseño de este estudio es descriptivo. Se realizó con colaboradores del SENA, a través de encuestas con opción de respuesta sí/no con criterio personal, con el fin de determinar el juicio de cada colaborador; estos fueron aplicados a una población de 10 colaboradores incluyendo hombres y mujeres de las diferentes áreas. En consecuencia, esto lleva a mejorar los procesos del manual que contenga los pasos técnicos de un proceso de inducción, para implementarlo y de igual manera desarrollar su efectividad dentro de la empresa en el menor tiempo posible. Palabras claves Entrenamiento, experiencia, Inducción, oportunidad, resultado.Regularly cited as one of the most stressful life events a person will experience, starting a new job can be an overwhelming time. The experience a beginner has in those early days with your company is much more important than you think. Creating a strong onboarding process allows you to get ahead of many of the issues you might normally face, saving you a lot of time, money, and stress in both the short and long term. Plus, inductions don't have to be a seemingly endless list of boring guidelines based on dress codes and office rules, they're an opportunity to inspire your new hire and make them feel confident that joining your company was the right decision. The objective of this study is to establish the relationship of induction in the labor exercise, the design of this study is descriptive. It was carried out with SENA collaborators, through surveys with a yes/no response option based on personal criteria, in order to determine the judgment of each collaborator; these were applied to a population of 10 collaborators including men and women from different areas. Consequently, this leads to improving the processes of the manual that contains the technical steps of an induction process, to implement it and in the same way develop its effectiveness within the company in the shortest possible time. Keywords Training, experience, Induction, opportunity, result
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