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BIOLOGY (1425 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 1720 Journals sorted alphabetically
AAPS Journal     Hybrid Journal   (Followers: 20)
Achievements in the Life Sciences     Open Access   (Followers: 4)
ACS Synthetic Biology     Full-text available via subscription   (Followers: 21)
Acta Biologica Colombiana     Open Access   (Followers: 7)
Acta Biologica Hungarica     Full-text available via subscription   (Followers: 4)
Acta Biologica Sibirica     Open Access  
Acta Biomaterialia     Hybrid Journal   (Followers: 25)
Acta Biotheoretica     Hybrid Journal   (Followers: 5)
Acta Chiropterologica     Full-text available via subscription   (Followers: 6)
acta ethologica     Hybrid Journal   (Followers: 4)
Acta Limnologica Brasiliensia     Open Access   (Followers: 3)
Acta Médica Costarricense     Open Access   (Followers: 2)
Acta Musei Silesiae, Scientiae Naturales : The Journal of Silesian Museum in Opava     Open Access  
Acta Neurobiologiae Experimentalis     Open Access  
Acta Parasitologica     Hybrid Journal   (Followers: 9)
Acta Scientiarum. Biological Sciences     Open Access   (Followers: 2)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
Actualidades Biológicas     Open Access   (Followers: 1)
Advanced Health Care Technologies     Open Access   (Followers: 4)
Advanced Studies in Biology     Open Access  
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 3)
Advances in Bioinformatics     Open Access   (Followers: 18)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4)
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 6)
Advances in Cell Biology     Open Access   (Followers: 24)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 12)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 11)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 5)
Advances in Ecological Research     Full-text available via subscription   (Followers: 41)
Advances in Environmental Sciences - International Journal of the Bioflux Society     Open Access   (Followers: 20)
Advances in Enzyme Research     Open Access   (Followers: 9)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 7)
Advances in Genome Biology     Full-text available via subscription   (Followers: 11)
Advances in High Energy Physics     Open Access   (Followers: 19)
Advances in Human Biology     Open Access   (Followers: 1)
Advances in Life Science and Technology     Open Access   (Followers: 14)
Advances in Life Sciences     Open Access   (Followers: 4)
Advances in Marine Biology     Full-text available via subscription   (Followers: 15)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 22)
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3)
Advances in Regenerative Biology     Open Access   (Followers: 1)
Advances in Structural Biology     Full-text available via subscription   (Followers: 8)
Advances in Virus Research     Full-text available via subscription   (Followers: 5)
African Journal of Range & Forage Science     Hybrid Journal   (Followers: 6)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 1)
Ageing Research Reviews     Hybrid Journal   (Followers: 8)
Aging Cell     Open Access   (Followers: 10)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat     Open Access  
AJP Cell Physiology     Full-text available via subscription   (Followers: 13)
AJP Endocrinology and Metabolism     Full-text available via subscription   (Followers: 22)
AJP Lung Cellular and Molecular Physiology     Full-text available via subscription   (Followers: 3)
Al-Kauniyah : Jurnal Biologi     Open Access  
Alasbimn Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Biology Teacher     Full-text available via subscription   (Followers: 13)
American Fern Journal     Full-text available via subscription   (Followers: 1)
American Journal of Agricultural and Biological Sciences     Open Access   (Followers: 10)
American Journal of Bioethics     Hybrid Journal   (Followers: 10)
American Journal of Biostatistics     Open Access   (Followers: 9)
American Journal of Human Biology     Hybrid Journal   (Followers: 12)
American Journal of Medical and Biological Research     Open Access   (Followers: 5)
American Journal of Plant Sciences     Open Access   (Followers: 19)
American Journal of Primatology     Hybrid Journal   (Followers: 15)
American Malacological Bulletin     Full-text available via subscription   (Followers: 3)
American Naturalist     Full-text available via subscription   (Followers: 68)
Amphibia-Reptilia     Hybrid Journal   (Followers: 6)
Anaerobe     Hybrid Journal   (Followers: 4)
Analytical Methods     Full-text available via subscription   (Followers: 9)
Anatomical Science International     Hybrid Journal   (Followers: 2)
Animal Cells and Systems     Hybrid Journal   (Followers: 4)
Annales de Limnologie - International Journal of Limnology     Hybrid Journal   (Followers: 1)
Annales françaises d'Oto-rhino-laryngologie et de Pathologie Cervico-faciale     Full-text available via subscription   (Followers: 3)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3)
Annales UMCS, Biologia     Open Access   (Followers: 1)
Annals of Applied Biology     Hybrid Journal   (Followers: 7)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 18)
Annals of Human Biology     Hybrid Journal   (Followers: 4)
Annual Review of Biomedical Engineering     Full-text available via subscription   (Followers: 17)
Annual Review of Biophysics     Full-text available via subscription   (Followers: 25)
Annual Review of Cancer Biology     Full-text available via subscription   (Followers: 1)
Annual Review of Cell and Developmental Biology     Full-text available via subscription   (Followers: 39)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 15)
Annual Review of Genomics and Human Genetics     Full-text available via subscription   (Followers: 19)
Annual Review of Phytopathology     Full-text available via subscription   (Followers: 10)
Anthropological Review     Open Access   (Followers: 25)
Anti-Infective Agents     Hybrid Journal   (Followers: 3)
Antibiotics     Open Access   (Followers: 9)
Antioxidants     Open Access   (Followers: 4)
Antioxidants & Redox Signaling     Hybrid Journal   (Followers: 8)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5)
Anzeiger für Schädlingskunde     Hybrid Journal   (Followers: 1)
Apidologie     Hybrid Journal   (Followers: 4)
Apmis     Hybrid Journal   (Followers: 1)
APOPTOSIS     Hybrid Journal   (Followers: 8)
Applied Bionics and Biomechanics     Open Access   (Followers: 8)
Applied Vegetation Science     Full-text available via subscription   (Followers: 9)
Aquaculture Environment Interactions     Open Access   (Followers: 2)
Aquaculture International     Hybrid Journal   (Followers: 22)
Aquaculture Reports     Open Access   (Followers: 3)
Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society     Open Access   (Followers: 6)
Aquatic Biology     Open Access   (Followers: 5)
Aquatic Ecology     Hybrid Journal   (Followers: 30)
Aquatic Ecosystem Health & Management     Hybrid Journal   (Followers: 13)
Aquatic Science and Technology     Open Access   (Followers: 3)
Aquatic Toxicology     Hybrid Journal   (Followers: 18)
Archaea     Open Access   (Followers: 3)
Archiv für Molluskenkunde: International Journal of Malacology     Full-text available via subscription   (Followers: 3)
Archives of Biomedical Sciences     Open Access   (Followers: 7)
Archives of Microbiology     Hybrid Journal   (Followers: 8)
Archives of Natural History     Hybrid Journal   (Followers: 7)
Archives of Oral Biology     Hybrid Journal   (Followers: 2)
Archives of Virology     Hybrid Journal   (Followers: 5)
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2)
Arid Ecosystems     Hybrid Journal   (Followers: 3)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
Arquivos do Museu Dinâmico Interdisciplinar     Open Access  
Arthropod Structure & Development     Hybrid Journal   (Followers: 2)
Arthropods     Open Access   (Followers: 1)
Artificial DNA: PNA & XNA     Hybrid Journal   (Followers: 2)
Artificial Photosynthesis     Open Access   (Followers: 1)
Asian Bioethics Review     Full-text available via subscription   (Followers: 1)
Asian Journal of Biodiversity     Open Access   (Followers: 5)
Asian Journal of Biological Sciences     Open Access   (Followers: 3)
Asian Journal of Cell Biology     Open Access   (Followers: 6)
Asian Journal of Developmental Biology     Open Access   (Followers: 2)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 2)
Asian Journal of Nematology     Open Access   (Followers: 3)
Asian Journal of Poultry Science     Open Access   (Followers: 4)
Australian Life Scientist     Full-text available via subscription   (Followers: 2)
Australian Mammalogy     Hybrid Journal   (Followers: 6)
Autophagy     Hybrid Journal   (Followers: 2)
Avian Biology Research     Full-text available via subscription   (Followers: 4)
Avian Conservation and Ecology     Open Access   (Followers: 12)
Bacteriology Journal     Open Access   (Followers: 2)
Bacteriophage     Full-text available via subscription   (Followers: 3)
Bangladesh Journal of Bioethics     Open Access  
Bangladesh Journal of Plant Taxonomy     Open Access  
Bangladesh Journal of Scientific Research     Open Access   (Followers: 1)
Berita Biologi     Open Access   (Followers: 1)
Between the Species     Open Access   (Followers: 1)
Bio Tribune Magazine     Hybrid Journal  
BIO Web of Conferences     Open Access  
BIO-Complexity     Open Access  
Bio-Grafía. Escritos sobre la Biología y su enseñanza     Open Access  
Bioanalytical Reviews     Hybrid Journal   (Followers: 2)
Biocatalysis and Biotransformation     Hybrid Journal   (Followers: 6)
Biochemistry and Cell Biology     Hybrid Journal   (Followers: 14)
Biochimie     Hybrid Journal   (Followers: 7)
BioControl     Hybrid Journal   (Followers: 5)
Biocontrol Science and Technology     Hybrid Journal   (Followers: 5)
Biodemography and Social Biology     Hybrid Journal   (Followers: 1)
Biodiversidad Colombia     Open Access  
Biodiversity : Research and Conservation     Open Access   (Followers: 26)
Biodiversity and Natural History     Open Access   (Followers: 5)
Biodiversity Data Journal     Open Access   (Followers: 3)
Biodiversity Informatics     Open Access  
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access  
Bioeksperimen : Jurnal Penelitian Biologi     Open Access  
Bioelectrochemistry     Hybrid Journal   (Followers: 2)
Bioelectromagnetics     Hybrid Journal   (Followers: 1)
Bioenergy Research     Hybrid Journal   (Followers: 2)
Bioengineering and Bioscience     Open Access   (Followers: 1)
BioEssays     Hybrid Journal   (Followers: 10)
Bioethics     Hybrid Journal   (Followers: 14)
BioéthiqueOnline     Open Access  
Biofabrication     Hybrid Journal   (Followers: 3)
Biogeosciences (BG)     Open Access   (Followers: 10)
Biogeosciences Discussions (BGD)     Open Access   (Followers: 1)
Bioinformatics     Hybrid Journal   (Followers: 308)
Bioinformatics and Biology Insights     Open Access   (Followers: 15)
Bioinspiration & Biomimetics     Hybrid Journal   (Followers: 6)
Biointerphases     Open Access   (Followers: 1)
Biojournal of Science and Technology     Open Access  
Biologia     Hybrid Journal  
Biologia on-line : Revista de divulgació de la Facultat de Biologia     Open Access  
Biological Bulletin     Partially Free   (Followers: 4)
Biological Control     Hybrid Journal   (Followers: 5)
Biological Invasions     Hybrid Journal   (Followers: 16)
Biological Journal of the Linnean Society     Hybrid Journal   (Followers: 16)
Biological Letters     Open Access   (Followers: 4)
Biological Procedures Online     Open Access  
Biological Psychiatry     Hybrid Journal   (Followers: 43)
Biological Psychology     Hybrid Journal   (Followers: 6)
Biological Research     Open Access  
Biological Rhythm Research     Hybrid Journal   (Followers: 2)
Biological Theory     Hybrid Journal   (Followers: 1)
Biological Trace Element Research     Hybrid Journal  
Biologicals     Full-text available via subscription   (Followers: 9)
Biologics: Targets & Therapy     Open Access   (Followers: 1)
Biologie Aujourd'hui     Full-text available via subscription  
Biologie in Unserer Zeit (Biuz)     Hybrid Journal   (Followers: 42)
Biologija     Open Access  
Biology     Open Access   (Followers: 5)
Biology and Philosophy     Hybrid Journal   (Followers: 16)
Biology Bulletin     Hybrid Journal   (Followers: 1)
Biology Bulletin Reviews     Hybrid Journal  
Biology Direct     Open Access   (Followers: 7)
Biology Letters     Full-text available via subscription   (Followers: 36)

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Journal Cover Acta Médica Costarricense
  [2 followers]  Follow
  This is an Open Access Journal Open Access journal
   ISSN (Print) 0001-6002
   Published by SciELO Homepage  [717 journals]
  • La investigación clínica en Costa Rica se encuentra en un punto
           crítico: aplicación actual de la “Ley Reguladora de Investigación

  • (Evidence based medicine: the case of blood pressure targets)

    • Abstract: ResumenEl concepto de “Medicina basada en evidencias”, que ha adquirido mayor trascendencia en el transcurso de los últimos años, se apoya en el postulado de que la enseñanza y la práctica clínica de la medicina, así como la definición de las políticas de salud a nivel poblacional, deben estar respaldadas por evidencias científicas sólidas, que demuestren que existe una adecuada relación entre los beneficios y los potenciales inconvenientes asociados con la implementación práctica de cualquier intervención preventiva, diagnóstica o terapéutica. Lamentablemente, en la realidad muchas de las acciones usuales en la práctica médica no cumplen con esas condiciones, lo que puede resultar en una utilización inapropiada de los recursos disponibles y en la exposición de los pacientes a riesgos innecesarios. La “medicina basada en evidencias” parte de un análisis crítico exhaustivo de los diversos estudios clínicos que hayan evaluado una cuestión específica, con el fin de identificar la evidencia de mayor calidad y solidez científica disponible, y a partir de ahí, realizar una cuantificación que permita establecer si la balanza de los beneficios y de los riesgos justifica su aplicación clínica. Además, es un proceso dinámico, cuyos resultados pueden irse modificando paulatinamente, con el objetivo de mejorar la atención médica, a medida que surgen nuevas evidencias de calidad. El caso de las cifras meta de presión arterial usadas en el tratamiento de la hipertensión arterial, es un tópico que ha sido sometido en años recientes al proceso de análisis de las evidencias; como resultado, han ocurrido cambios e implicaciones a nivel clínico y académico, y sirve de ejemplo para ilustrar el proceso descrito.AbstractThe concept of “Evidence Based Medicine”, which has achieved greater importance during the last years, is based on the idea that teaching and practicing clinical medicine, as well as the definition of health policies at the population level, should be supported by solid scientific evidences showing that there is an adequate relationship between the benefits and potential risks associated with the practical implementation of any preventive, diagnostic, or therapeutic intervention. Unfortunately, many of the usual actions in medical practice do not fulfill those conditions, which may result in inappropriate use of available resources and exposure of patients to unnecessary risks. “Evidence Based Medicine” starts from an exhaustive critical inquiry of the clinical studies that have evaluated a specific issue, in order to identify the available evidence with higher quality and scientific support, and from there to perform a quantitative analysis that allows determining if the benefits/risks balance justifies its clinical application. In addition, it is a dynamic process, whose results can be gradually modified as new quality evidence emerges, with the final objective of improving medical care. The case of blood pressure targets used in the treatment of arterial hypertension is a topic that has been subjected in recent years to the process of analysis of the evidence. As a result, changes and implications have occurred both at clinical and academic levels, and it serves as an example to illustrate the process described above.
  • (Cardiovascular complications in hospitalized patients with
           community-acquired pneumonia: retrospective cohort study)

    • Abstract: ResumenJustificación y objetivo:Algunos estudios han documentado mayor riesgo de eventos cardiovasculares en pacientes con neumonía adquirida en la comunidad. El objetivo del estudio es caracterizar la población de pacientes con diagnóstico de neumonía adquirida en la comunidad e identificar factores relacionados con el desarrollo de complicaciones cardiovasculares y muerte a 30 días.Métodos:se realizó un estudio observacional de cohorte retrospectivo con casos y controles en el Servicio de Medicina Interna en un hospital universitario de nivel terciario, con pacientes con diagnóstico de neumonía adquirida en la comunidad. Se evaluaron variables clínicas y de laboratorio de los pacientes ingresados, así como diagnóstico clínico de arritmia, infarto agudo de miocardio, insuficiencia cardiaca de nuevo, o empeoramiento de cuadro preexistente, edema pulmonar y muerte en los 30 días posteriores al ingreso (casos), o ausencia de estos hallazgos (controles).Resultados:se identificó 35 casos de neumonía adquirida en la comunidad, de los cuales 17 presentaron complicaciones cardiovasculares (48,57%). Los pacientes de mayor edad, de sexo femenino, hipertensos y cardiópatas isquémicos, tuvieron mayor riesgo de eventos cardiovasculares, así como los que presentaron al ingreso mayores valores de presión sistólica, creatin fosfokinasa y nitrógeno ureico. El 22,85% de los pacientes falleció en los siguientes 30 días posteriores al ingreso por neumonía; el riesgo de muerte fue mayor para los pacientes con complicaciones cardiovasculares [Hazard ratio 8,8 (IC95% 1,08-71,66; p=0,03)]. No se encontró asociación entre las diferencias clínicas identificadas y el desenlace fatal. Limitaciones: las variables se tomaron de los expedientes clínicos, dependiendo completamente del criterio de los médicos tratantes para solicitud de exámenes y asignación de variables. Es posible la presencia de factores de confusión debido a covariables no medidas o severidad de la enfermedad.Conclusión:en los pacientes internados con diagnóstico de neumonía adquirida en la comunidad, el desarrollo de complicaciones cardiovasculares se asoció con aumento de mortalidad.AbstractJustification and objectives:Previous studies have demonstrated increased risk of cardiovascular events in patients with community-acquired pneumonia. The objective of this study is to characterize the population of patients diagnosed with community-acquired pneumonia and identify factors associated with the development of cardiovascular complications and 30-day mortality.Methods:A retrospective observational case-control cohort was done, with cases and controls in the department of Internal Medicine at a tertiary level teaching hospital with patients diagnosed with community-acquired pneumonia. Clinical and laboratory variables of patients admitted were evaluated, also the clinical diagnosis of arrhythmia, acute myocardial infarction, heart failure (new or worsening), pulmonary edema and death within 30 days after admission (cases) or absence of these findings (controls).Results:35 cases of community-acquired pneumonia were identified on the first semester of 2015, of which 17 (48.57%) developed cardiovascular complications. Older patients, female sex, hypertension and ischemic heart disease demonstrated higher risk of cardiovascular events, as well as presenting the systolic blood pressure, creatine phosphokinase and urea nitrogen. The 22.85% of patients died within 30 days after being admitted; the risk of death was higher for patients with cardiovascular complications [Hazard ratio 8.8 (95% CI 1.08-71.66; p = 0.03)]. No association between the identified clinical differences and fatal outcome was found. Limitations:The retrospective nature of the study and the variables, which were collected from clinical records, depended entirely on the discretion of the treating physicians to request tests and variable allocation. The presence of confounding is possible due to unmeasured covariates or disease severity.Conclusions:In patients admitted with a diagnosis of community-acquired pneumonia the development of cardiovascular complications was associated with increased mortality.
  • (Management Guidelines of Rheumatoid Arthritis Consensus 2016)

    • Abstract: ResumenLa artritis reumatoide sigue representando un importante factor de deterioro de la salud de las personas que sufren esta condición, a pesar de los avances recientes en su tratamiento. En forma adicional, se reconoce su significativo impacto a nivel social y económico. La Asociación Costarricense de Reumatología publicó en 2010, las primeras guías de manejo de esta enfermedad.En el presente trabajo, este primer documento fue actualizado, mediante la revisión exaustiva de la información científica disponible y relevante a la fecha, con el objetivo de uniformar y optimizar la atención de la artritis reumatoide en Costa Rica. Incluye las recomendaciones de evaluación de los pacientes, su seguimiento y tratamiento. También se revisan las opciones de medicamentos disponibles en el país, es decir, drogas modificadoras de los síntomas y fármacos modificadores de la enfermedad convencionales, además de agentes biológicos y moléculas pequeñas.AbstractRheumatoid arthritis continues to represent an important factor of deterioration in the health of people suffering from this condition despite recent medical advances in their treatment. Additionally, its significant social and economic impact it is recognized. The Costa Rican Association of Rheumatology published in 2010 the first guidelines for the management of this disease. In the present work, this first document is updated, through an exhaustive review of the available and relevant scientific information to date. This review aims to standardize and optimize the care of rheumatoid arthritis in Costa Rica. It includes recommendations for evaluation of patients, follow-up and treatment. There is also a review of drug options available in the country, i.e., symptoms-modifying drugs, conventional disease modifying drugs, as well as biological agents and small molecules.
  • (Penile reconstruction with microsurgery)

    • Abstract: ResumenEl pene tradicionalmente se ha considerado un símbolo de poder, masculinidad y fertilidad, por lo cual toda patología peniana congénita o adquirida, que eventualmente culmine en la amputación parcial o total del falo, constituye un evento catastrófico para cualquier hombre, presentando efectos devastadores, tanto físicos como psicológicos. Los diferentes niveles de amputación peniana en un individuo pueden definir su capacidad de miccionar y de concretar el coito, lo que perjudica directamente su virilidad y desempeño sexual y, por ende, su bienestar psicológico. Todo esto justifica el esfuerzo reconstructivo que se pueda ofrecer con el fin de mejorar la calidad de vida del paciente. El colgajo libre radial de antebrazo se ha considerado por muchos años el estándar de oro en reconstrucción peniana, ya que ha demostrado buenos resultados funcionales y estéticos. Esta técnica microquirúrgica representa un gran avance reconstructivo, lo cual se traduce en un rescate de la autoestima y de la masculinidad del paciente, con mejoría significativa de su calidad de vida. A continuación se presenta el caso clínico de un paciente masculino de 35 años de edad, quien requirió una amputación casi total de pene, secundaria a una quemadura eléctrica severa, y posteriormente fue sometido a la primera reconstrucción peniana microquirúrgica con colgajo libre radial de antebrazo, en Costa Rica.AbstractThe penis has traditionally been considered a symbol of power, masculinity and fertility, so any congenital or acquired penile pathology that eventually culminates in partial or total amputation of the phallus constitutes a catastrophic event for any man, presenting both physical and psychological devastating effects. The different levels of penile amputation in an individual can define their ability to micturate and to concretize sexual intercourse, which directly impairs their virility and sexual performance and thus their psychological well-being. All this finally justifies any reconstructive effort that can be offered in order to improve the patient’s quality of life. The free radial forearm flap has been considered for many years the gold standard in penile reconstruction as it has demonstrated good functional and aesthetic results. This microsurgical technique represents a great reconstructive advance, which results in a rescue of the patient’s self-esteem and masculinity with a significant improvement in his quality of life. The authors present the clinical case of a 35-year-old male patient who required an almost total amputation of the penis, secondary to a severe electrical burn and who subsequently underwent the first microsurgical penile reconstruction with a free radial forearm flap in Costa Rica.
  • (Thrombosis in pediatric patient with osteosarcoma)

    • Abstract: ResumenPaciente masculino de 12 años, con cuadro de 2 meses de evolución de dolor en cadera derecha y claudicación, con circulación colateral abdominal y edema de miembro inferior derecho al examen físico, con radiografías de pelvis que muestran masa en cresta iliaca derecha; ultrasonido de abdomen y miembro inferior derecho (con doppler ) con masa en cresta iliaca derecha asociada a trombo oclusivo total de vena iliaca común derecha, hasta vena cava inferior en su desembocadura en aurícula derecha; además, tomografía de tórax con múltiples vasos de circulación colateral con extenso trombo en la vena cava inferior, que se extiende a la aurícula derecha, cruzando la válvula tricúspide e insinuándose en el ventrículo derecho, con múltiples nódulos pulmonares bilaterales, que por sus características, son altamente sugestivos de lesiones metastásicas, y tomografía de pelvis que muestra extensa lesión infiltrante del hueso iliaco derecho, la cual compromete la totalidad del hueso hasta la altura del techo acetabular. Además, se documenta masa de tejido blando que desplaza músculos adyacentes, estructuras vasculares y vísceras de la pelvis hacia la izquierda, con patrón blástico, con áreas líticas que comprometen el aspecto lateral derecho de S3 y S4, encontrándose también infiltradas por la neoplasia.Debido al patrón de destrucción ósea y aspecto morfológico del trombo, se desaconseja trombectomía, y se realiza biopsia tumoral, con reporte de osteosarcoma; se inicia quimioterapia.AbstractA 12-year-old male patient, with a 2-month history of pain in the right hip and claudication, with collateral abdominal circulation and lower right limb edema on physical examination, with pelvic radiographs showing a right iliac crest mass; ultrasound of abdomen and lower right limb (with Doppler) with right iliac crest mass associated with total occlusive thrombus of right common iliac vein, to inferior vena cava at its right atrial outlet; also chest tomography with multiple collateral circulation vessels with extensive thrombus in the inferior vena cava, extending to the right atrium, crossing the tricuspid valve and insinuating itself in the right ventricle, with multiple bilateral pulmonary nodules that, because of their characteristics are highly suggestive of metastatic lesions, and pelvic tomography which shows extensive infiltrating lesion of the right iliac bone, which compromises the entire bone to the height of the acetabular roof; in addition, a mass of soft tissue is documented that displaces adjacent muscles, vascular structures and viscera of the pelvis to the left, with blastic pattern, with lithic areas that compromise the right lateral aspect of S3 and S4, being also infiltrated by the neoplasia.Due to the bone destruction pattern and the morphological aspect of the thrombus, thrombectomy is advised against and tumor biopsy is performed with osteosarcoma report and chemotherapy is initiated.
  • (Chronic diarrhea by Lamblia intestinalis in an adult)

    • Abstract: ResumenSe presenta un caso de inmunodeficiencia común variable en un paciente masculino, joven con larga historia (9 años) de procesos infecciosos gastrointestinales y respiratorios recurrentes; a pesar de los diferentes esquemas terapéuticos, con evidencia diagnóstica de niveles bajos de inmunoglobulinas de las clases IgG, IgM e IgA; se pretende comparar su evolución a partir de su historia clínica y los resultados de sus exámenes complementarios, con la bibliografía revisada. La inmunodeficiencia común variable explica un déficit primario de IgG (al menos 2 desviaciones estándar por debajo de los valores de referencia para su edad), al menos otra de las Ig (IgA o IgM) y una reducción o ausencia de producción de anticuerpos. Esta entidad se considera poco frecuente en términos de incidencia, aunque cursa muchas veces inadvertida por el predominio de sus efectos. Clínicamente, se manifiesta por la presencia de infecciones recurrentes con preponderancia de las respiratorias y gastrointestinales. Desde el punto de vista etiológico, su génesis es controversial, pero se describen niveles bajos de inmunoglobulinas y una reducción o ausencia de producción de anticuerpos.AbstractWe present a variable common immunodeficiency case in a young male patient with a long history (9 years) of recurrent gastrointestinal and respiratory infectious processes, despite the different therapeutic schemes, with diagnostic evidence of low levels of IgG, IgM And IgA; aiming to make a comparison of its evolution in function of its clinical history and the results of its complementary examinations, with the bibliography reviewed. Variablecommon immunodeficiency explains a primary IgG deficit (at least 2 standard deviations below the reference values for his age) and at least one other Ig (IgA or IgM) and a reduction or absence of antibody production. This entity is considered infrequent in terms of incidence, although it is often inadvertent due to the predominance of its effects. Clinically it is manifested by the presence of recurrent infections with preponderance of the respiratory and gastrointestinal. From an aetiological point of view, its genesis is controversial, but low levels of immunoglobulins and a reduction or absence of antibody production are all described.
  • (Surgical management of cardiac myxoma)

    • Abstract: ResumenSe presenta el caso de una paciente de 32 años, con trastorno psiquiátrico, con historia de un mes de evolución de disnea y tos no productiva, tratada inicialmente como bronconeumonía, con amplia cobertura antibiótica sin mejoría de síntomas; se maneja luego como síndrome de dificultad respiratoria aguda. Debido a franco ataque al estado general y datos incongruentes con historia clínica, se realiza ecocardiograma que incidentalmente reporta mixoma en aurícula izquierda. Los mixomas cardíacos son el tipo más común de tumores primarios benignos cardíacos, una patología poco frecuente y con mortalidad asociada a muerte súbita en un 15%. La mayoría de casos son encuentros incidentales, esporádicos y su etiología no es conocida. Los síntomas pueden asociarse a embolismo del tumor, insuficiencia cardiaca, obstrucción mecánica valvular y síntomas constitucionales varios.AbstractWe present the case of a 32 year old patient known to have a psychiatric disorder, who presented with a history of one month of dyspnoea and nonproductive cough, which was treated initially as bronchopneumonia, with wide spectrum antibiotics without clinical improvement. Later is treated as an acute pulmonary distress syndrome, but because of poor general condition and incongruent data in the clinical history an echocardiogram was performed in the Emergency Room that incidentally founds a myxoma in the left atrium. Cardiac myxomas are the most common primary heart benign tumors, and have a mortality rate associated with sudden death of 15%. In the majority of the cases the diagnosis is incidental, sporadic and the etiology is unknown.The symptoms may be associated with tumor embolism, heart failure, valvular disease and nonspecific symptoms.
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
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