Revisión sistemática : uso de imágenes por difusión en RMN, para predecir sobrevida en pacientes adultos con diagnostico de glioblastoma multiforme


Autoria(s): Martínez Rodríguez, Laura Paola; Medina, Carlos Andrés; Plata Bautista, Yamid
Contribuinte(s)

Trillos Peña, Carlos Enrique

Data(s)

28/10/2012

Resumo

El Glioblastoma multiforme (GBM), es el tumor cerebral más frecuente, con pronóstico grave y baja sensibilidad al tratamiento inicial. El propósito de este estudio fue evaluar si la Difusión en RM (IDRM), es un biomarcador temprano de respuesta tumoral, útil para tomar decisiones tempranas de tratamiento y para obtener información pronostica. Metodología La búsqueda se realizo en las bases de datos EMBASE, CENTRAL, MEDLINE; las bibliografías también fueron revisadas. Los artículos seleccionados fueron estudios observacionales (casos y controles, cohortes, corte transversal), no se encontró ningún ensayo clínico; todos los participante tenían diagnostico histopatológico de GBM, sometidos a resección quirúrgica y/o radio-quimioterapia y seguimiento de respuesta al tratamiento con IDRM por al menos 6 meses. Los datos extraídos de forma independiente fueron tipo de estudio, participantes, intervenciones, seguimiento, desenlaces (sobrevida, progresión/estabilización de la enfermedad, muerte) Resultados Quince estudios cumplieron los criterios de inclusión. Entre las técnicas empleadas de IDRM para evaluar respuesta radiológica al tratamiento, fueron histogramas del coeficiente aparente de difusion ADC (compararon valores inferiores a la media y el percentil 10 de ADC, con los valores superiores); encontrando en términos generales que un ADC bajo es un fuerte predictor de sobrevida y/o progresión del tumor. (Esto fue significativo en 5 estudios); mapas funcionales de difusion (FDM) (midieron el porcentaje de cambio de ADC basal vs pos tratamiento) que mostro ser un fuerte predictor de sobrevida en pacientes con progresión tumoral. DISCUSION Desafortunadamente la calidad de los estudios fue intermedia-baja lo que hace que la aplicabilidad de los estudios sea limitada.

Universidad del Rosario y Nacional

introduction Glioblastoma multiforme (GBM) is the most common brain tumor with poor prognosis and low sensitivity to initial treatment. The purpose of this study was to evaluate whether Diffusion MRI (IDRM) is an early biomarker of tumor response, useful for early treatment decisions and forecast information. methodology The search was conducted in the databases EMBASE, CENTRAL, MEDLINE, bibliographies were also reviewed. Selected articles were observational studies (case-control, cohort, cross-section), we found no clinical trial, all participants had histopathologic diagnosis of GBM, underwent surgical resection and / or radio-chemotherapy and monitoring response to treatment with IDRM for at least 6 months. Data were independently extracted study type, participants, interventions, monitoring, outcomes (survival, progression / stable disease, death) Results Fifteen studies met the inclusion criteria. Among the techniques employed to evaluate IDRM radiological response to treatment, were histograms of apparent diffusion coefficient (ADC values ​​compared below average and the 10th percentile of ADC, with higher values​​), generally finding that a low ADC is a strong predictor of survival and / or tumor progression. (This was significant in five studies); functional diffusion maps (FDM) (measured ADC percentage change of baseline vs. post treatment) was shown to be a strong predictor of survival in patients with tumor progression. DISCUSSION Unfortunately, the quality of the studies was intermediate-low which makes the applicability of the studies is limited.

Formato

application/pdf

Identificador

http://repository.urosario.edu.co/handle/10336/4019

Idioma(s)

spa

Publicador

Facultad de medicina

Direitos

info:eu-repo/semantics/openAccess

Fonte

instname:Universidad del Rosario

reponame:Repositorio Institucional EdocUR

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TEME 0094 2012

Palavras-Chave #GLIOBLASTOMA #TERAPIA DEL GEN #NEOPLASMAS DE CABEZA Y CUELLO #Diffusion Magnetic Resonance Imaging/methods #Treatment Outcome #Glioblastoma/ therapy
Tipo

info:eu-repo/semantics/bachelorThesis

info:eu-repo/semantics/acceptedVersion