Search results for "lesion"
showing 10 items of 1094 documents
Pulmonary contusion: CT vs plain radiograms.
1989
In experimentally induced pulmonary contusions, CT (n = 27) and chest X-ray (n = 24) findings were compared with the findings at autopsy. Twenty-seven of 27 (100%) pulmonary contusions were visible by CT immediately after trauma compared with 9 of 24 (37.5%) in the chest X-ray. After 30 min follow-up, 18 of 24 (75%) lesions were seen on the plain film. Five of 24 (21%) contusions escaped detection on conventional radiographs. Computed tomography underestimated lesion size in 5 of 60 (8%) measurements, conventional radiographs in 21 of 36 (58%) measurements. Pathological examination never revealed a pulmonary contusion that was not demonstrated by CT. Therefore, pulmonary contusion seems unl…
Does granulocyte-colony stimulating factor stimulate peripheral nerve regeneration? An experimental study on traumatic lesion of the sciatic nerve in…
2021
Aim of the study. To analyse the therapeutic potential of granulocyte-colony stimulating factor (G-CSF) treatment using a rat model of traumatic sciatic nerve lesion. Clinical rationale for the study. G-CSF has proven strong neurotrophic properties in various models of ischaemic and traumatic brain injury. Fewer studies exist regarding the influence of G-CSF on posttraumatic peripheral nerve regeneration. Currently, the possibilities of pharmacological prevention or treatment of mechanical nerve injury are limited, and there is an urgent need to find new treatment strategies applicable in clinical situations. Material and methods . A controlled traumatic right sciatic nerve lesion was set u…
Traumatologia Forense
2011
Normal and Abnormal Tissue Classification in Positron Emission Tomography Oncological Studies
2018
Positron Emission Tomography (PET) imaging is increasingly used in radiotherapy environment as well as for staging and assessing treatment response. The ability to classify PET tissues, as normal versus abnormal tissues, is crucial for medical analysis and interpretation. For this reason, a system for classifying PET area is implemented and validated. The proposed classification is carried out using k-nearest neighbor (KNN) method with the stratified K-Fold Cross-Validation strategy to enhance the classifier reliability. A dataset of eighty oncological patients are collected for system training and validation. For every patient, lesion (abnormal tissue) and background (normal tissue around …
Complement Component 3 expressed by the endometrial ectopic tissue is involved in the endometriotic lesion formation through mast cell activation
2020
AbstractThe pathophysiology of endometriosis (EM) is an excellent example of immune dysfunction, reminiscent of tumor microenvironment as well. Here, we report that an interplay between C3 and mast cells (MCs) is involved in the pathogenesis of ectopic EM. C3 is at the epicenter of the regulatory feed forward loop, amplifying the inflammatory microenvironment, in which the MCs are protagonists. Thus, C3 can be considered a marker of EM and its local synthesis can promote the engraftment of the endometriotic cysts. We generated a murine model of EM via injection of minced uterine tissue from a donor mouse, into the peritoneum of the recipient mice. The wild type mice showed greater amount of…
Asymptomatic Carotid Lesion as a Marker of Future Cerebrovascular and Cardiovascular Events
2003
Evidence of intimal tear in type A intramural hematoma of the aorta: A case series
2017
Highlights • We report two cases of type A intramural hematoma of the aorta. • We found radiological and intraoperative evidence of an intimal tear. • This finding supports the hypotesis that IMH belong to “aortic dissection” disease.
Epidemiología de la patología de la mucosa oral más frecuente en niños
2005
El odontólogo responsable de tratar al niño debe tener en cuenta la posibilidad de encontrar cualquier condición patológica a nivel de la mucosa oral sobre todo a edades tempranas. Por ello, hemos tratado de aunar en nuestro estudio tanto la información más actualizada como nuestra propia experiencia para intentar ofrecer los datos de mayor interés, desde el punto de vista epidemiológico, que nos permita diagnosticar la patología de la mucosa oral más frecuente en la población infantil. Los estudios epidemiológicos realizados estos últimos años han mostrado la dispar apreciación de los diferentes investigadores y una gran variabilidad en las prevalencias de las lesiones mucosas orales en la…
Influencia de la práctica deportiva en la morfología de la espalda. Estudio mediante proyección de luz estructurada
2014
INTRODUCCIÓN: Desde 1920 se ha demostrado la asociación entre la variación de la forma de la columna y el trabajo repetitivo requerido en los deportes. Las características físicas de los sujetos facilitan el éxito de cada uno de los distintos deportes y la práctica deportiva profesionalizada lleva asociada un tipo y grado de lesiones relacionada con el deporte. HIPÓTESIS DE TRABAJO La práctica deportiva difiere de un tipo de deporte a otro e incluso dentro de él, en función de las acciones que requieren las distintas posiciones de juego. Esta diferente actividad puede afectar a la producción de lesiones y también puede modificar la morfología de la espalda, debido a la diferente activación …
Uncommon evolutions and complications of common benign liver lesions
2018
International audience; Frequently encountered on abdominal imaging studies, the majority of common benign liver lesions are asymptomatic, confidently diagnosed by imaging, and do not require further workup, follow-up, or treatment. The increasing use of multimodality liver imaging, has allowed the recognition of uncommon evolutions of common benign liver lesions such as size changes, fibrotic regression, and content and vascularization changes, and their complications such as rupture, hemorrhage, thrombosis, extrinsic compression, and malignancy. The purpose of this pictorial review is to describe and illustrate the incidence and diagnostic features of these uncommon evolutions and complic…