Caracterización de tumores primarios de tiroides con arquitectura folicular y cambios nucleares similares a los del carcinoma papilar en pacientes del hospital universitario nacional, 2020-2023

dc.contributor.advisorOlaya Morales, Natalia
dc.contributor.authorQuijano Turizo, Jose Miguel
dc.contributor.educationalvalidatorTarquino Gonzalez Jonathan Steve
dc.coverage.cityBogotá
dc.coverage.countryColombia
dc.coverage.temporal2020-2023
dc.date.accessioned2026-02-05T18:44:18Z
dc.date.available2026-02-05T18:44:18Z
dc.date.issued2025
dc.descriptionilustraciones a color, diagramas, fotografíasspa
dc.description.abstractIntroducción: Diferenciar entre neoplasias tiroideas con arquitectura folicular y cambios nucleares similares a los del carcinoma papilar puede resultar complejo. Objetivo: Caracterizar tumores primarios de tiroides bien diferenciados con arquitectura folicular y score nuclear ≥2, describiendo sus perfiles demográficos y morfológicos, determinando los rasgos nucleares por histopatología convencional y analizando cuantitativamente las características nucleares usando herramientas de patología digital. Métodos: Estudio observacional analítico, retrospectivo, de corte transversal en pacientes del Hospital Universitario Nacional de Colombia (2020–2023). Se realizó el análisis digital de 921 microfotografías y se segmentaron 88.501 núcleos de células foliculares tiroideas, incluyendo control de tejido tiroideo benigno y PTC clásico, mediante QuPath y StarDist. Posteriormente se realizaron comparaciones mediante U de Mann–Whitney y Kruskal–Wallis con Dunn-Bonferroni. Resultados y conclusiones: Los diagnósticos más frecuentes de la cohorte analizada fueron NIFTP y PTCfi. Las neoplasias malignas correspondieron a pacientes con una edad promedio más alta y tumores de menor tamaño. NIFTP se asoció a categorías Bethesda III–IV, mientras que el PTCfi con Bethesda V–VI. Los NIFTP evidenciaron predominantemente un score nuclear de 2, mientras que las neoplasias malignas (IEFVPTC y PTCfi) un score nuclear de 3. Las pseudoinclusiones fueron mucho más frecuentes en el PTCfi. Se identificaron diferencias significativas en la circularidad y la textura nuclear entre las neoplasias con arquitectura folicular y una puntuación nuclear ≥2. Las neoplasias de bajo riesgo (NIFTP, WDT-UMP) mostraron núcleos más circulares, con mayor entropía y contraste que los de las neoplasias malignas (IEFVPTC y PTCfi). (Texto tomado de la fuente)spa
dc.description.abstractIntroduction: Differentiating thyroid neoplasms with follicular architecture and nuclear changes resembling those of papillary carcinoma remains challenging. Objective: This study aimed to characterize well-differentiated primary thyroid tumors with follicular architecture and nuclear score ≥2 by describing their demographic and morphologic profiles, determining nuclear features through conventional histopathology, and quantitatively analyzing digital nuclear characteristics using digital pathology. Methods: An observational, analytical, retrospective, cross-sectional study was conducted in patients at the National University Hospital of Colombia (2020–2023). Digital analysis of 921 microphotographs was performed, segmenting 88,501 nuclei of thyroid follicular cells, including controls of benign thyroid tissue and classic papillary thyroid carcinoma (PTC), using QuPath and StarDist. Statistical comparisons were performed using the Mann–Whitney U and Kruskal–Wallis tests with Dunn–Bonferroni correction. Results and conclusions: The most frequent diagnoses in the analyzed cohort were NIFTP and PTCfi. Malignant neoplasms occurred in patients with a higher mean age and smaller tumor size. NIFTP was associated with Bethesda categories III–IV, whereas PTCfi was associated with Bethesda V–VI. NIFTP predominantly exhibited a nuclear score of 2, while malignant neoplasms (IEFVPTC and PTCfi) showed a nuclear score of 3. Pseudoinclusions were markedly more frequent in PTCfi. Significant differences were identified in nuclear circularity and texture among neoplasms with follicular architecture and nuclear score ≥2. Low-risk neoplasms (NIFTP, WDT-UMP) displayed more circular nuclei with higher entropy and contrast than malignant neoplasms (IEFVPTC and PTCfi).eng
dc.description.degreelevelEspecialidades Médicas
dc.description.degreenameEspecialista en Patología Anatómica y Clínica
dc.description.methodsobservacional analítico.
dc.description.notes.
dc.description.technicalinfo.
dc.format.extent108 páginas
dc.format.mimetypeapplication/pdf
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/89403
dc.language.isospa
dc.publisherUniversidad Nacional de Colombia
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotá
dc.publisher.facultyFacultad de Medicina
dc.publisher.placeBogotá, Colombia
dc.publisher.programBogotá - Medicina - Especialidad en Patología Anatómica y Clínica
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.rights.licenseReconocimiento 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.ddc610 - Medicina y salud::616 - Enfermedades
dc.subject.ddc610 - Medicina y salud::615 - Farmacología y terapéutica
dc.subject.decsNeoplasias Primarias Múltiplesspa
dc.subject.decsNeoplasms, Multiple Primaryeng
dc.subject.decsCáncer Papilar Tiroideospa
dc.subject.decsThyroid Cancer, Papillaryeng
dc.subject.decsPathology, Clinicaleng
dc.subject.decsCélulas Epiteliales Tiroideasspa
dc.subject.decsThyroid Epithelial Cellseng
dc.subject.decsPatología Clínicaspa
dc.subject.proposalNIFTPspa
dc.subject.proposalWDT-UMPspa
dc.subject.proposalIEFVPTCspa
dc.subject.proposalPTCspa
dc.subject.proposalPatología digitalspa
dc.subject.proposalHaralickeng
dc.subject.proposalDigital pathologyeng
dc.titleCaracterización de tumores primarios de tiroides con arquitectura folicular y cambios nucleares similares a los del carcinoma papilar en pacientes del hospital universitario nacional, 2020-2023spa
dc.title.translatedCharacterization of primary thyroid tumors with follicular architecture and nuclear changes similar to those of papillary carcinoma in patients at the National University Hospital, 2020–2023eng
dc.typeTrabajo de grado - Especialidad Médica
dc.type.coarhttp://purl.org/coar/resource_type/c_bdcc
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.contentText
dc.type.driverinfo:eu-repo/semantics/masterThesis
dc.type.redcolhttp://purl.org/redcol/resource_type/TM
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dcterms.audience.professionaldevelopmentEstudiantes
dcterms.audience.professionaldevelopmentInvestigadores
dcterms.audience.professionaldevelopmentMaestros
dcterms.audience.professionaldevelopmentPúblico general
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2

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