Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 3 de 3
Filtrar
Adicionar filtros








Intervalo de ano
1.
Rev. mex. ing. bioméd ; 44(2): 1345, May.-Aug. 2023. tab, graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1536655

RESUMO

RESUMEN Las técnicas de neuroimagenología otorgan información relevante del estado funcional y anatómico del cerebro humano. Esta información es particularmente importante cuando existe una lesión cerebral causada por alguna patología, tal como la enfermedad vascular cerebral (EVC). En pacientes afectados por esta enfermedad, se ha determinado que la neuroplasticidad es el mecanismo principal de recuperación de la función motora perdida. Debido a la alta prevalencia de la EVC a nivel mundial y especialmente en países en vías de desarrollo, es necesario continuar investigando los mecanismos de recuperación involucrados en esta patología. La resonancia magnética funcional (RMF) y la imagenología por tensor de difusión (ITD) son dos de las técnicas de neuroimagenología más utilizadas con este fin. La RMF permite analizar la actividad neuronal generada al ejecutar tareas de movimiento, mientras que la ITD proporciona información estructural de la anatomía cerebral. En esta revisión narrativa, se presentan diversos estudios que han utilizado estas técnicas de neuroimagenología en la cuantificación de los cambios de neuroplasticidad en pacientes con EVC tras participar en algún programa de neurorrehabilitación. Comprender mejor estos cambios de neuroplasticidad permitiría diseñar esquemas de rehabilitación que proporcionen un mayor beneficio a los pacientes con EVC.


ABSTRACT Neuroimaging techniques provide relevant information of the functional and anatomical status of the human brain. This information is of particular importance when a pathology, like stroke, produces a brain injury. In stroke patients, it has been determined that neuroplasticity is the primary recovery mechanism of the lost motor function. Due to worldwide high prevalence, especially in developing countries, it is necessary to continue the research of the recovery mechanisms involved in this pathology. To this end, functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI) are two of the most used neuroimaging techniques. In stroke patients, fMRI allows the analysis of the neural activity produced by the execution of motor tasks, whereas DTI provides structural information of the brain anatomy. In this narrative review, multiple studies that employ these neuroimaging techniques for quantification of neuroplasticity changes in stroke patients after undergoing a neurorehabilitation program are presented. Better understanding of these neuroplasticity changes would allow researchers to design and provide more beneficial rehabilitation schemes to stroke patients.

2.
Cir. & cir ; 77(6): 487-491, nov.-dic. 2009. ilus
Artigo em Espanhol | LILACS | ID: lil-566450

RESUMO

Introducción: El hamartoma fibroso de la infancia es una proliferación benigna de los tejidos blandos, de presentación infrecuente; 91 % de los casos ocurre durante el primer año de edad y afecta más frecuentemente al sexo masculino. Se caracteriza por ser una lesión subcutánea de morfología característica con patrón de crecimiento organoide trifásico. Caso clínico: Lactante masculino de seis meses de edad, con tumor en la región plantar medial del pie izquierdo, el cual fue resecado completamente. En el estudio histopatológico se informó como hamartoma fibroso de la infancia. Conclusiones: Puede localizarse en cualquier sitio anatómico, aunque 5 a 10 % afecta las extremidades inferiores existen pocos casos informados en el pie. En biopsias pequeñas es importante su diagnóstico diferencial con otras lesiones fibroadiposas para el adecuado tratamiento. La resección quirúrgica amplia con márgenes libres de lesión confiere un buen pronóstico a los pacientes.


BACKGROUND: Fibrous hamartoma of infancy (FHI) is an infrequent benign proliferation of the soft tissues. Ninety one percent of cases occur during the first year of life. FHI is characterized as a subcutaneous lesion with characteristic morphology with a triphasic organoid growth pattern. CLINICAL CASE: We present the case of a 6-month-old male infant with a tumor in the medial plantar region of the left foot, which was completely withered. Histopathological study reported a fibrous hamartoma of infancy. CONCLUSIONS: Fibrous hamartoma of infancy most frequently affects males. It may be localized at any anatomic site, although 5-10% of cases affect the lower limbs. Few cases are reported in the foot. This is a lesion with a characteristic morphological pattern; however, in small biopsies, its differential diagnosis is important with other fibroadipose lesions for appropriate treatment. Ample surgical resection with lesion-free borders confers a good prognosis for these patients.


Assuntos
Humanos , Masculino , Lactente , Doenças do Pé , Hamartoma , Doenças do Pé/diagnóstico , Doenças do Pé/cirurgia , Hamartoma/diagnóstico , Hamartoma/cirurgia
3.
Cir. & cir ; 76(3): 265-269, mayo-jun. 2008. ilus
Artigo em Espanhol | LILACS | ID: lil-567097

RESUMO

BACKGROUND: Tendon sheath lipoma is an uncommon tumor characterized morphologically by mature fatty tissue lobes adherent to the tendon or intersecting its fibers. The association with quadriceps tendon rupture is unusual. Etiologic factors that may condition those ruptures have not yet been fully described. However, several authors suggest the existence of a subjacent pathology such as metabolic or inflammatory diseases. Minimal trauma may lead to such ruptures as well as associated ligamentous or bony injuries. The prognosis regarding quadriceps tendon rupture mainly depends on the lap between injury and time of repair. CLINICAL CASE: We present the case of a quadricipital tendinous rupture produced by the presence of a benign neoplasm, which is a very infrequent association. The patient was surgically treated for quadriceps tendon reconstruction via tendinous reinsertion at the patella. Currently, during rehabilitation, the patient is symptom free with an almost-complete flexion/ extension of his left knee. CONCLUSIONS: We consider that importance must be given to neoplastic disease as a cause of tendinous rupture, regardless of their infrequency and unusual clinical presentation.


Assuntos
Humanos , Masculino , Adulto , Lipoma/complicações , Neoplasias Musculares/complicações , Tendões , Traumatismos dos Tendões/etiologia , Lipoma/cirurgia , Neoplasias Musculares/cirurgia , Músculo Quadríceps , Ruptura , Traumatismos dos Tendões/cirurgia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA