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dc.rights.licenseAtribución-SinDerivadas 4.0 Internacional
dc.contributor.advisorMoreno Gómez, Luz Angela
dc.contributor.authorOjeda Gómez, Juan Sebastián Alonso
dc.date.accessioned2022-02-08T16:08:47Z
dc.date.available2022-02-08T16:08:47Z
dc.date.issued2021-12-09
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/80908
dc.descriptionilustraciones, fotografías, gráficas, tablas
dc.description.abstractLos sarcomas primarios de SNC son una patología rara y existe poca literatura que aborde en detalle sus características imagenológicas. El presente es un estudio retrospectivo descriptivo que pretende realizar una caracterización clínica, imagenológica y patológica de estas neoplasias. Se recolectaron 31 pacientes entre el 2008 y 2021 atendidos en Fundación HOMI. Se revisaron las historias clínicas, y se analizaron muestras de patología y las imágenes diagnósticas (TC, RM). Hubo 19 niños y 12 niñas, entre 1-17 años (promedio 9 años). La gran mayoría presentó cefalea y vómito como primera manifestación clínica. Los tumores fueron predominantemente supratentoriales (96%) y de localización frontal (62%) y parietal (21%). En el 33% de los casos el tumor cruzó la línea media. La mayor proporción de las masas fueron unifocales, con bordes bien definidos y de gran tamaño (4.2-7.7 cm). El índice de actividad se midió con KI67, evidenciando una proliferación elevada (>30%) en el 86% de los casos y zonas de marcado pleomorfismo. En la RM las neoplasias fueron hipointensas en T1 e hiperintensas en T2, presentaron realce con la administración de medio de contraste y restricción a la difusión. Además, se identificaron con frecuencia áreas de hemorragia y necrosis; y en menor medida, quistes y calcificaciones. Tras el seguimiento se observó una mortalidad del 58%, la mayor parte en pacientes que tuvieron recaídas. Se requiere de estudios multicéntricos para establecer resultados estadísticamente significativos con respecto a sobrevida y otros desenlaces. (Texto tomado de la fuente).
dc.description.abstractPrimary CNS sarcomas are extremely rare, yet very aggressive tumors that are associated with high morbimortality rates. There is scarce literature about their radiologic features. The aim of this retrospective study is to describe the clinical, pathological and imaging features of these neoplasms. For this purpose, 31 patients treated in Fundación HOMI were collected between 2008 and 2021. Their medical records were reviewed, and the pathology samples and images (CT, MRI) were analyzed. There were 19 boys and 12 girls, between 1-17 years (mean age 9 years). The vast majority presented with headaches and vomiting as the first clinical manifestation. The tumors were predominantly supratentorial (96%) and were located in frontal (62%) and parietal (21%) lobes. In 33% of the patients the tumor located crossing the midline. The highest proportion of the masses were unifocal, had well defined borders and large size (4.2-7.7 cm). The proliferation index was measured with KI67, showing a high proliferation rate (KI57>30%) in 86% of the cases. In the MRI, the neoplasms showed T1 hypointensity, T2 hiperintensity, heterogeneous post-contrast enhancement and diffusion restriction. Furthermore, areas of hemorrhage (96%), necrosis (79%) and calcifications (21%) were identified. A global mortality of 58% was observed. Most of the deaths presented in children who had relapses. Multicenter studies are required to establish statistically significant results regarding survival and other outcomes.
dc.format.extentxv, 46 páginas
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.publisherUniversidad Nacional de Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/
dc.subject.ddc610 - Medicina y salud::616 - Enfermedades
dc.titleSarcomas primarios de sistema nervioso central en pacientes pediátricos: características radiológicas y patológicas
dc.typeTrabajo de grado - Especialidad Médica
dc.type.driverinfo:eu-repo/semantics/masterThesis
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.publisher.programBogotá - Medicina - Especialidad en Radiología e Imágenes Diagnósticas
dc.description.notesIncluye anexos
dc.description.degreelevelEspecialidades Médicas
dc.description.degreenameEspecialista en Radiología e Imágenes Diagnósticas
dc.description.methodsSerie de casos
dc.description.researchareaNeuroimágenes
dc.identifier.instnameUniversidad Nacional de Colombia
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombia
dc.identifier.repourlhttps://repositorio.unal.edu.co/
dc.publisher.departmentDepartamento de Imágenes diagnósticas
dc.publisher.facultyFacultad de Medicina
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotá
dc.relation.indexedBireme
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.subject.decsEnfermedades del Sistema Nervioso Central
dc.subject.decsCentral Nervous System Diseases
dc.subject.decsRadiology
dc.subject.decsRadiología
dc.subject.lembSarcoma
dc.subject.lembSarcoma
dc.subject.proposalSistema nervioso central
dc.subject.proposalSarcoma
dc.subject.proposalTumor cerebral
dc.subject.proposalImágenes diagnósticas
dc.subject.proposalCentral nervous system
dc.subject.proposalSarcoma
dc.subject.proposalBrain tumor
dc.subject.proposalDiagnostic imaging
dc.title.translatedPrimary central nervous system sarcomas in children: radiological and pathological features
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dcterms.audience.professionaldevelopmentInvestigadores
dcterms.audience.professionaldevelopmentPúblico general


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Atribución-SinDerivadas 4.0 InternacionalEsta obra está bajo licencia internacional Creative Commons Reconocimiento-NoComercial 4.0.Este documento ha sido depositado por parte de el(los) autor(es) bajo la siguiente constancia de depósito