Abstract The Bacalar Lagoon (BL) in Quintana Roo, Mexico; is an area of high interest due to its tourist potential. However, the changes in landuse patterns, urbanization, extensive cattle ranching and rapidly expanding agriculture, have generated negative impacts on areas of adjacent plan communities and wildlife habitats. The objective of this study has to evaluate the level of vegetation conservation in the southern portion of the BL through the avifauna present in sites with contrasting degrees of conservation. Additionally, change “and their habitat preference(s) in the different communities” to and their habitat use preferences in the different communities. To evaluate the level of conservation of the BL, field visits and botanical collections were carried out to identify species. For the counting and identification of birds, monthly surveys were made through coastal tours along the cenote Xul-ha in 2.5 km transects. Four transects were established: two for sites characterized as semi-conserved and two with disturbed sites. A total richness of 40 taxa was observed, which corresponds to 8.1% of the Quintana Roo avifauna and 32% to wetland birds (125 species). The species accumulation curves indicated that semi-conserved and disturbed sites tend to reach asymptotes and with a coverage percentage greater than 90%. In terms of diversity and community structure, no significant differences were observed. However, the semi-conserved and disturbed sites each have 11 unique species and share 18 species. The LB has an intermediate diversity of bird species compared to studies at the Mexican level, the habitat is important for the conservation of birdlife; as it functions as a reservoir of diversity. Strategies has been suggested that promote sustainable tourism, support the restoration of natural vegetation; and facilitate the economic development of the region. (BL Mexico potential However patterns urbanization agriculture habitats Additionally preference s preference(s Xulha Xul ha 25 2 5 2. established semiconserved semi conserved 4 observed 81 8 1 8.1 32 125 (12 . species) 90 90% structure birdlife tourism region 8. 3 12 (1 9 (

Resumo A Lagoa Bacalar (BL) em Quintana Roo, México, é uma zona de grande interesse devido ao seu potencial turístico. No entanto, as mudanças nos padrões de uso da terra, urbanização, pecuária extensiva e agricultura em rápida expansão geraram impactos negativos nas áreas das comunidades adjacentes do plano e nos habitats da vida selvagem. O objetivo deste estudo foi avaliar o nível de conservação da vegetação na porção sul da BL através da avifauna presente em locais com graus de conservação contrastantes. Além disso, alterar sua(s) preferência(s) de habitat nas diferentes comunidades. Para avaliar o nível de conservação da LB foram realizadas visitas de campo e coletas botânicas para identificação de espécies. Para a contagem e identificação das aves foram realizados levantamentos mensais através de passeios costeiros ao longo do cenote Xul-ha em transectos de 2,5 km. Foram estabelecidos quatro transectos: 2 para locais caracterizados como semiconservados e 2 para locais perturbados. Uma riqueza total de 40 táxons foi observada, o que corresponde a 8,1% da avifauna de Quintana Roo e 32% de aves pantanosas (125 espécies). As curvas de acumulação de espécies indicaram que locais semiconservados e perturbados tendem a atingir assíntotas e com percentual de cobertura superior a 90%. Em termos de diversidade e estrutura comunitária, não foram observadas diferenças significativas. No entanto, os locais semiconservados e perturbados têm, cada um, 11 espécies únicas e partilham 18 espécies. A BL possui uma diversidade intermediária de espécies de aves em comparação com estudos mexicanos, o habitat é importante para a conservação da avifauna; pois funciona como um reservatório de diversidade. Estratégias que promovem o turismo sustentável, apoiam a restauração da vegetação natural e facilitam o desenvolvimento econômico da região foram sugeridas, no presente estudo. (BL México turístico entanto terra urbanização selvagem contrastantes disso suas sua s sua(s preferências preferência preferência(s Xulha Xul ha 25 5 2, km 4 observada 81 8 1 8,1 32 125 (12 . espécies) 90 90% comunitária significativas têm mexicanos sustentável sugeridas 8, 3 12 (1 9 (

Abstract Very early onset inflammatory bowel disease occurs in children under 6 years age. It is frequently associated to a diverse ethiology, dysbiosis being usually described as a triggering factor. Commonly, this population is highly resilient to inmmunosuppressant therapies. We report here a medical case of a patient diagnosed with unclassified and steroid-dependent colitis, with a year of evolution, who had no responded to intensified therapy at home, and, therefore, was hospitalized at our centre. Treatment with oral antibiotics was intended as remission induction in combination with his usual inmmunomodulator treatment. Although clinical remission was observed at first stage, a new activity outbreak emerged requiring a second round of antibiotics therapy, which was unsuccessful and currently withdrawned.

Resumen La enfermedad inflamatoria intestinal de inicio temprano se manifiesta en pacientes pediátricos antes de los 6 años de edad. Habitualmente se asocia a diversas causas, siendo descrita frecuentemente la disbiosis como factor desencadenante. Esta población presenta comúnmente refractariedad a los tratamientos inmunosupresores más empleados. Presentamos el caso de un paciente con colitis no clasificable y corticodependiente de un año de evolución ingresado en nuestro centro que no había respondido a terapia inmunosupresora intensificada. Se plantea terapia con antibióticos orales como inducción de la remisión del brote de actividad en combinación con su tratamiento inmunomodulador habitual. Si bien inicialmente se obtiene la remisión clínica, el paciente experimenta posteriormente al alta un nuevo brote de actividad siendo necesaria una segunda reinducción con antibióticos que no resulta eficaz, motivando su suspensión.

Abstract Recently, within a generalized Hubbard model which includes correlated nearest (Δt) and next-nearest hopping interactions (Δt3), a comparative study between d- and s*- wave superconducting ground states on a square lattice was performed. It was found that the critical temperature of transition T c (n), as a function of the electron concentration n, reaches a maximum (T c-max ) at a given optimal doping (n op ) for each value of the ratio t´/t, where t and t´ are the tight-binding nearest and next-nearest hopping parameter of a square lattice, respectively. From all values obtained for T c - m a x ( t ' / t , n o p ) a global minimum one was encountered for both symmetries. Likewise, in the same space, a minimal ground state energy Eg was also obtained. For d-wave channel both minima are localized around the same optimal doping. However, for s* symmetry, the two minima are located at different electron concentrations. In this work, we additionally study how the p-wave ground-state energy and the critical temperature depend on the hoppings parameters and the electron concentration. The results show that for p-wave, minimum global values of T c-max and Eg in the ( t ' / t , n o p ) space do exist too, and are found around half filling but, as occurs for s *- wave, the minimum of T c-max does not occur at the same point as Eg. Moreover, we present a ground-state phase diagram in the space ( t ' / t , n o p ) where it is possible to find zones of coexistence and competition between the s*-, p- and d-wave symmetries. Also, an analysis of the shape of the Fermi surface and the single-particle energy, as functions of the wave vector of an electron in the Cooper pair, has been done for different regions of the mentioned space.

Abstract In a previous work reported in this journal, the thermodynamical properties of d-wave superconducting ground states close to half filling were obtained by using a generalized Hubbard model. In the present work, extended s-wave (s*) symmetry superconducting ground states are considered within the same model and a comparison is made between these two symmetries for those properties depending on the carrier density (n) and first- (t) and second-neighbor (t’) electron hopping parameters. For s*-wave superconducting states, the electron-electron interaction Hamiltonian parameters is fixed as in the d-wave case with ∆t = 0.5 eV, ∆t3 = 0.05 eV, and two cases were studied; U = 0 and U = 2 eV. Without considering the diluted regime (n → 0), in the interval n ∈ [0,1], for both symmetries, the maximum critical temperatures (Tc,max) at optimal doping (nop) are lower than those attained at high electron densities n ∈ [1,2]. The superconducting gap at T = 0 K and the corresponding ground state energy (Eg), for all the carrier concentrations, were also obtained. The superconductor state with d-wave symmetry does not depend on U and a supremum for nop(nop,sup), where both Tc,max (nop,t’ and Eg(nop,t’ are minimum, can be found close to half filling. However, in general, for a s*-wave superconductor Tc,max and Eg attain their minimum values at different (nop,t’) points and a nop,sup cannot be properly defined.

ABSTRACT Introduction: The information on skin lesions and their associated factors in informal workers in Latin America is scarce. Objective: To determine the existing relationship between sociodemographic, environmental and labor conditions and the prevalence of skin conditions, self-reported by informal workers “venteros” from the Medellin downtown. Material and Methods: Cross-sectional study with analytical intention and primary source of information. 686 workers were included. An assisted survey was applied, after conducting a pilot test and standardization of the interviewers. The presence of skin conditions was considered as the dependent variable and the working, sociodemographic and environmental conditions as independent variables. Error control was performed with statistical analysis, selection and information biases were controlled. Univariate and bivariate analysis was performed. Results: Mainly male workers (57.6%), ages 45-59 years, 60.0% from rural areas. They worked> 8 hours / day (80.6%), all week, with> 20 years (50.7%) in their work. 72.2% did not use personal protection mechanisms. 61.5% considered that environmental pollution affected their work and their health. 19.83% presented skin affectations, such as allergies (12.0%), pruritus and rash. Lower prevalence of allergies in men (24.0%) and ≥60 years. Higher prevalences in those who worked> 8 hours / day (94.0%), all week (43.0%), with exposure to chemical substances (PR = 1.88, IC = 1.11, 3.20), sellers of merchandise and equipment (PR = 2.06.IC: 1.08; 3.91). Conclusion: They explain a higher prevalence of allergies coming from the urban area, selling merchandise and junk, working> 8 hours / day, all week, being exposed to chemical substances, considering that air quality affects their work, and presenting comorbidities.

RESUMEN. Introducción: La información acerca de lesiones en piel y sus factores asociados, en trabajadores informales en América Latina y el Caribe aun es escasa. Objetivo: Determinar la relación existente entre las condiciones sociodemográficas, ambientales, laborales y la prevalencia de afecciones en la piel auto-reportada por trabajadores informales “venteros” del centro de Medellín. Material y Métodos: Estudio transversal con intención analítica y fuente primaria de información. Se incluyeron 686 trabajadores. Se aplicó encuesta asistida, previa realización de prueba piloto y estandarización de los encuestadores. Variable dependiente; prevalencia de afecciones en piel. Variables independientes; condiciones laborales, sociodemográficas y ambientales. Se realizó control de errores con análisis estadísticos y sesgos de selección e información. Se realizaron análisis univariado, bivariado y multivariado. Resultados: Trabajadores fundamentalmente hombres (57.6%), edades entre 45-59 años, 60,0% procedente de zona rural. Trabajaban > 8 horas/día (80,6%), toda la semana, con > 20 años (50,7%) en su labor. El 72,2% no utilizaba mecanismos de protección personal. 61,5% consideraba que la contaminación ambiental afectaba su labor y su salud. 19,83% presentó afectaciones cutáneas, como; alergias (12,0%), prurito y sarpullido. Menor prevalencia de alergias en hombres (24,0%) y ≥ 60 años. Mayores prevalencias en quienes laboraban >8 horas/día (94,0%), toda la semana (43,0%), con exposición a sustancias químicas (RP=1,88.IC=1,11;3,20), vendedores de mercancía y cacharro (RP =2,06.IC: 1,08;3,91). Conclusión: Explican mayor prevalencia de alergias proceder de la zona urbana, vender mercancía y cacharro, trabajar >8 horas/día, toda la semana, exponerse a sustancias químicas, considerar que la calidad del aire afecta su labor, y presentar comorbilidades.

RESUMEN. Introducción: La información acerca de lesiones en piel y sus factores asociados, en trabajadores informales en América Latina y el Caribe aun es escasa. Objetivo: Determinar la relación existente entre las condiciones sociodemográficas, ambientales, laborales y la prevalencia de afecciones en la piel auto-reportada por trabajadores informales “venteros” del centro de Medellín. Material y Métodos: Estudio transversal con intención analítica y fuente primaria de información. Se incluyeron 686 trabajadores. Se aplicó encuesta asistida, previa realización de prueba piloto y estandarización de los encuestadores. Variable dependiente; prevalencia de afecciones en piel. Variables independientes; condiciones laborales, sociodemográficas y ambientales. Se realizó control de errores con análisis estadísticos y sesgos de selección e información. Se realizaron análisis univariado, bivariado y multivariado. Resultados: Trabajadores fundamentalmente hombres (57.6%), edades entre 45-59 años, 60,0% procedente de zona rural. Trabajaban > 8 horas/día (80,6%), toda la semana, con > 20 años (50,7%) en su labor. El 72,2% no utilizaba mecanismos de protección personal. 61,5% consideraba que la contaminación ambiental afectaba su labor y su salud. 19,83% presentó afectaciones cutáneas, como; alergias (12,0%), prurito y sarpullido. Menor prevalencia de alergias en hombres (24,0%) y ≥ 60 años. Mayores prevalencias en quienes laboraban >8 horas/día (94,0%), toda la semana (43,0%), con exposición a sustancias químicas (RP=1,88.IC=1,11;3,20), vendedores de mercancía y cacharro (RP =2,06.IC: 1,08;3,91). Conclusión: Explican mayor prevalencia de alergias proceder de la zona urbana, vender mercancía y cacharro, trabajar >8 horas/día, toda la semana, exponerse a sustancias químicas, considerar que la calidad del aire afecta su labor, y presentar comorbilidades.

ABSTRACT Introduction: The information on skin lesions and their associated factors in informal workers in Latin America is scarce. Objective: To determine the existing relationship between sociodemographic, environmental and labor conditions and the prevalence of skin conditions, self-reported by informal workers “venteros” from the Medellin downtown. Material and Methods: Cross-sectional study with analytical intention and primary source of information. 686 workers were included. An assisted survey was applied, after conducting a pilot test and standardization of the interviewers. The presence of skin conditions was considered as the dependent variable and the working, sociodemographic and environmental conditions as independent variables. Error control was performed with statistical analysis, selection and information biases were controlled. Univariate and bivariate analysis was performed. Results: Mainly male workers (57.6%), ages 45-59 years, 60.0% from rural areas. They worked> 8 hours / day (80.6%), all week, with> 20 years (50.7%) in their work. 72.2% did not use personal protection mechanisms. 61.5% considered that environmental pollution affected their work and their health. 19.83% presented skin affectations, such as allergies (12.0%), pruritus and rash. Lower prevalence of allergies in men (24.0%) and ≥60 years. Higher prevalences in those who worked> 8 hours / day (94.0%), all week (43.0%), with exposure to chemical substances (PR = 1.88, IC = 1.11, 3.20), sellers of merchandise and equipment (PR = 2.06.IC: 1.08; 3.91). Conclusion: They explain a higher prevalence of allergies coming from the urban area, selling merchandise and junk, working> 8 hours / day, all week, being exposed to chemical substances, considering that air quality affects their work, and presenting comorbidities.

Abstract: Drone racing is a popular sport where human pilots control their drones via radio frequency to fly at high speed through complex race tracks. The latter has motivated to pose the question: could an autonomous drone beat a human in a drone race. Thus, some works have dealt with the autonomous drone racing challenge; however, very few works have dealt with the case of a race when an opponent is present in the track. In this work, we present an initial approach to address the problem of autonomous navigation while considering the presence of an opponent in the race track. To address this problem, we present a compact Convolutional Neural Network that predicts flight commands from a set of camera images captured on the fly. This network has been trained by imitation; this is, the network learns from examples generated by a human pilot. It is important to highlight that there is no explicit gate detection or trajectory planning/tracking in our approach. We have carried out experiments in the Gazebo simulator in a race track where the autonomous drone will face an opponent on its way to the gate. Our results show that the network manages to pilot the drone to evade the opponent, and after the evasion, the drone gets on-track towards the gate.

Abstract: In this work, we proposed an approach for autonomous driving based on the concept of following and overtaking. This policy controls the vehicle to follow a car ahead of it, and when getting closer, it applies an overtaking step to pass the car and later on to get incorporated to the lane again. For this work, we exploit the robustness of Convolutional Neural Networks for object tracking, which is used to track the car ahead of our autonomous vehicle. We use the pixel position of the tracker in combination with measurements from a laser scanner sensor, as input signals in a PID controller, responsible for driving the vehicle autonomously. We have carried out evaluations of our proposed policy in the Gazebo simulator, whose results indicate the feasibility of our approach.

RESUMO Um estudo retrospectivo e transversal dos tumores caninos foi realizado na capital do Estado do México durante o período de 2002-2016. Desde esse período, 393 tumores foram remetidos. Epidemiologia descritiva foi feita com base em todos os dados: raça, idade, sexo e características do tumor. Em seguida, a associação de risco entre tumores cutâneos e não cutâneos com variáveis como sexo, raça e idade foi analisada por meio do teste exato de Fisher e odds ratio. Além disso, algumas características da população canina foram estudadas em uma pesquisa. De todos os tumores, os de pele foram os mais frequentes (59,0%). O grupo de tumores relacionados à radiação ultravioleta foi o mais comum (15,1%). A frequência de tumores no sexo feminino foi de 53%, no entanto os machos apresentaram maior risco de desenvolver tumores cutâneos (OR = 1,88; 1,24-2,84) (0,003). As raças puras foram as mais comuns (82,5%), e a faixa etária mais frequente foi >7 anos (54,7%). A pesquisa mostrou que os machos (53%) e a faixa etária de um a sete anos (62,1%) foram os mais frequentes. Conclusões: idade, raça e sexo foram identificados como os principais fatores de risco para a tumorigênese. Da mesma forma, os tumores cutâneos foram associados à exposição à radiação ultravioleta, provavelmente até a altura da localidade (2667m ANM).

ABSTRACT A retrospective and cross-sectional study of canine tumors was performed in the capital of State of Mexico from 2002-2016. Since then, 393 tumors were remitted. Descriptive epidemiology was made from all data: breed, age, sex, and tumor features. Then the risk association between cutaneous and non-cutaneous tumors with variables such as sex, breed, and age were analyzed through an exact Fisher test and Odds ratio. In addition, some characteristics of the canine population were studied under a survey. Of all tumors, skin tumors were the most frequent (59.0%). The group of tumors related to ultraviolet radiation was the most common (15.1%). The frequency of tumors in females was 53%, nevertheless, males had more risk to develop cutaneous tumors (OR=1.88, 1.24-2.84) (0.003). The Pure breeds were the most common (82.5%) and the most frequent age range was > 7 years (54.7%). The survey showed that males (53%) and the age range 1-7 years (62.1%) were the most frequent. Conclusions, age, breed, and sex were identified as the major risk factors for tumorigenesis. Likewise, skin tumors were associated with exposure to ultraviolet radiation, probably to the height of the locality (2667mamls).

ABSTRACT The objective of this study was to determine the content of rosmarinic acid (RA), total phenolic compounds (TPC) and antioxidant capacity in Trolox (ACET) in three varieties of basil (Ocimum basilicum L.) employing different doses of potassium in nutrient solution (7, 9, 11 and 13 mmol L-1). It was used a 3 x 4 factorial random block design, where the factors were genotype and concentration of potassium. All the variables analyzed presented a significant difference (p ≤ 0.01). The AR content presented a range of 0.4 to 6.4 mg AR g-1. Values of 1.8 to 15.6 mg AGE g-1 were obtained for TPC content. The results obtained from ACET were 39 to 79.9 mg g-1 and these values were increased in relation to rosmarinic acid content and total phenolic compounds. The variety with the highest content of rosmarinic acid, total phenolics and antioxidant capacity was Red Rubin at 13 mmol L-1. The management of K doses in different varieties of basil supports the synthesis of secondary metabolites that are important for different areas of science, on this wise the increase of basil production and its nutraceutical quality would be an alternative to open new markets focused on food and medical industry.

RESUMEN El objetivo de esta investigación fue determinar el contenido de ácido rosmarínico (AR), compuestos fenólicos totales (CFT) y capacidad antioxidante equivalente en Trolox (CAET) en tres variedades de albahaca (Ocimum basilicum L.) aplicando dosis diferentes de potasio en solución nutritiva (7, 9, 11 y 13 mmol L-1). Se utilizó un diseño factorial 3 x 4 en bloques al azar, donde los factores fueron genotipo y concentración de potasio. Todas las variables analizadas presentaron diferencia significativa (p ≤ 0.01). El contenido de AR estuvo presente en un rango de 0.4 a 6.4 mg AR g-1. Se obtuvieron valores de 1.8 a 15.6 mg AGE g-1 para el contenido de CFT. Los resultados obtenidos de CAET fueron de 39 a 79.9 mg g-1 y estos valores se incrementaron en relación al contenido de ácido rosmarínico y compuestos fenólicos totales. La variedad con mayor contenido de ácido rosmarínico, fenólicos totales y capacidad antioxidante fue Red Rubin a 13 mmol L-1. El manejo de dosis de K en diferentes variedades de albahaca favorece la síntesis de metabolitos secundarios importantes para diferentes áreas de ciencia, por lo que el incremento de la producción de albahaca y de su calidad nutracéutica podría ser una alternativa para abrir nuevos mercados enfocados a la industria alimentaria y medicinal.

Abstract By means of the I-V characteristics measured at room temperature, the height of the Schottky barrier established by the conductive P t - I r tip of an Atomic Force Microscope on the aluminum doped ZnO thin films were estimated in the range of 0.58 - 0.64 eV. The ideality factors were in the range of 2.11 - 1.39, respectively. These values are in accordance with those reported by other authors that measured the height of the Pt Schottky barrier on ZnO by means of several methods. The procedure detailed in this work suggests that the scanning time for obtaining I-V Schottky characteristics is of the order of 2 ms.

Abstract The problem of depletion of fossil fuel reserves and the generation of pollutants from their combustion has sparked a search for alternative fuels such as ethanol. In several countries, ethanol produced from sugarcane and maize is mixed with gasoline and used as fuel for transport vehicles. This has decreased generation of pollutants and dependence on international oil prices, especially in countries that do not produce oil. To produce ethanol, low-cost raw material, such as lignocellulosic residues, agricultural crops with a high starch content, algae and others have been tested. In this essay, we analyze four generations of raw material for ethanol production. We mention current research interest in transformation processes and alternatives to improve production processes to yield ethanol fuel at a lower cost.

Resumen El problema de disminución de las reservas de combustibles fósiles y la generación de contaminantes debido a su combustión, han provocado la búsqueda de combustibles alternativos como el etanol. En varios países se usa el etanol producido desde caña de azúcar y maíz, mezclado con la gasolina, como combustible para los vehículos de transporte. Esto ha disminuido la generación de contaminantes y la dependencia de los precios internacionales del petróleo, sobre todo en países que no lo producen. Para producir etanol se buscan materias primas de bajo costo como los residuos lignocelulósicos, cultivos agrícolas con alto contenido de almidón, algas y otras fuentes. En este ensayo se hace un análisis de las cuatro generaciones de materias primas para producir etanol, se mencionan los intereses actuales de investigación en los procesos de transformación, así como las alternativas para mejorar procesos de producción, con la finalidad de tener etanol carburante a menor costo.

In order to evaluate the effect of VITAFERT on some bioproductive and health indicators of growing pigs under production conditions, two groups of animals of 240 pigs each were used. Group A represented the control, and B was supplied with 10 mL of VITAFERT/kg of live weight as a supplement in the feed. The food intake, the increase, the average daily gain, food conversion and viability were determined, as well as the occurrence of diarrheal episodes by recording the epizootic indexes of morbidity, mortality and lethality, associated with diarrheal processes. The relative risk was also estimated through the conformation of 2 x 2 contingency tables, applying an observational analytical study of cohort type and an economic valuation of the application of the product was carried out. It is concluded that the pigs supplemented with VITAFERT improve the bioproductive indicators of live weight increase, average daily gain, feed conversion and viability. They also show lower rates of morbidity, mortality and lethality before diarrhea. The risk of death in pigs that did not intake VITAFERT was higher than in those supplemented with this product and death losses were higher in pigs that did not intake VITAFERT.

Para evaluar el efecto del VITAFERT en algunos indicadores bioproductivos y de salud de cerdos en crecimiento en condiciones de producción, se utilizaron dos grupos de animales, de 240 cerdos cada uno. El grupo A representó el control, y al B se le suministró 10 mL de VITAFERT/kg de peso vivo como suplemento en el pienso. Se determinó el consumo de alimento, el incremento, la ganancia media diaria, conversión alimentaria y viabilidad, así como la ocurrencia de episodios diarreicos mediante el registro de los índices epizoóticos de morbilidad, mortalidad y letalidad, asociados a procesos diarreicos. Se estimó además, el riesgo relativo mediante la conformación de tablas de contingencia 2 x 2, aplicándose un estudio analítico observacional de tipo cohorte y se realizó una valoración económica de la aplicación del producto. Se concluye que los cerdos suplementados con VITAFERT mejoran los indicadores bioproductivos de incremento de peso vivo, ganancia media diaria, conversión alimentaria y viabilidad. Manifiestan además, menores índices de morbilidad, mortalidad y letalidad ante diarreas. El riesgo de muerte en los cerdos que no consumieron VITAFERT fue mayor que en los suplementados con este producto y las pérdidas por concepto de muerte fueron mayores en los cerdos que no consumieron VITAFERT.

Abstract Pulmonary epithelioid hemangioendothelioma is an uncommon neoplastic disease of endothelial origin, with an incidence inferior to one in a million. It usually behaves as a low-grade malignancy; nevertheless, a few cases have been described in which this tumour manifests a highly aggressive behavior, spreading throughout the organism. We report the case of a 77-year-old woman who was diagnosed with metastatic pulmonary epithelioid hemangioendothelioma with severe symptoms, requiring urgent treatment to palliate them.

Resumen El hemangioendotelioma epitelioide pulmonar es una enfermedad oncológica infrecuente de origen endotelial, con una incidencia inferior a un caso por millón de habitantes. Habitualmente se comporta como un neoplasia de bajo grado; sin embargo, se han descrito algunos casos en los que el tumor manifiesta una alta agresividad, extendiéndose con rapidez por todo el organismo. Presentamos el caso de una mujer de 77 años que fue diagnosticada de un hemangioendotelioma epitelioide pulmonar metastásico con sintomatología severa, precisando tratamiento urgente para su paliación.