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- W4242745488 abstract "Primary central nervous system (CNS) lymphoma is an aggressive and fatal extranodal non-Hodgkin lymphoma (NHL) jailed in CNS at initial diagnosis. Its prognosis is poor and the disease has a fatal outcome when compared with systemic NHL. A few baseline risk stratification scoring systems have been suggested to estimate the prognosis mainly based on serum lactate dehydrogenase (LDH) level, age, Karnofsky performance score (KPS), involvement of deep brain structures (DBS) and cerebrospinal fluid protein concentration. 18F-FDG-PET/CT has a high prognostic value with respect to overall survival (OS) and disease-free survival (DFS) in many cancers and lymphomas. We aimed to investigate metabolic tumour indexes on primary staging 18F-FDG-PET/CT as prognostic markers in primary CNS lymphoma.14 patients with primary CNS diffuse large B-cell lymphoma (stage I) were enrolled in this retrospective cohort study. Primary staging 18F-FDG-PET/CT was performed and quantitative parameters like maximum standardized uptake value (SUVmax), average standardized uptake value (SUVmean), metabolic tumour volume (MTV) and total lesion glycolysis (TLG) were calculated for all patients before the treatment. Cox regression models were performed to determine their relation with survival time.In the evaluation of all potential risk factors impacting recurrence/metastases (age, sex, serum LDH, involvement of DBS, SUVmax, SUVmean, MTV, TLG) with univariate analysis, TLG remained statistically significant (p = 0.02).Metabolic tumour parameters are useful in prognosis estimation of primary CNS lymphomas, especially TLG, which is the most important one and may play a role in patient management.Los linfomas del sistema nervioso central (SNC) son linfomas no Hodgkin extranodales, agresivos y fatales, albergados en el SNC en el diagnóstico inicial. Su pronóstico es malo, teniendo la enfermedad un resultado fatal en comparación con el linfoma no Hodgkin sistémico. Se han indicado una serie de sistemas de estratificación del riesgo para estimar el pronóstico, basados principalmente en el nivel sérico de lactato de deshidrogenasa, la edad, el índice de Karnofsky, el compromiso de las estructuras profundas del cerebro y la concentración proteica del líquido cefalorraquídeo. La PET/TC con 18F-FDG tiene un elevado valor pronóstico en cuanto a la supervivencia global y la supervivencia libre de enfermedad en muchos cánceres y linfomas. Nuestro objetivo fue investigar los índices tumorales metabólicos mediante 18F-FDG-PET/TC para estadificación primaria, como marcadores pronósticos de los linfomas primarios del SNC.Se incluyó en este estudio retrospectivo a una cohorte de 14 pacientes con linfoma primario de células B grandes del SNC (estadio i). Se realizó una PET/TC con 18F-FDG de estadificación primaria, calculándose en todos los pacientes, y con anterioridad al tratamiento, los parámetros cuantitativos tales como el valor estandarizado de captación máximo, el valor de captación medio, el volumen tumoral metabólico y la glucólisis tumoral total (TLG). Se realizaron modelos de regresión de Cox para determinar su relación con el tiempo de supervivencia.En la evaluación de todos los factores de riesgo potencial con impacto sobre la recidiva/metástasis (edad, sexo, lactato de deshidrogenasa sérico, compromiso de las estructuras profundas del cerebro, el valor estandarizado de captación máximo, el valor de captación medio, el volumen tumoral metabólico y la TLG), realizada mediante análisis univariante; el valor de TLG reflejó una significación estadística (p = 0,02).Los parámetros tumorales metabólicos resultan de utilidad para la estimación pronóstica de los linfomas primarios del SNC. En especial, la TLG constituye el parámetro más importante, y puede desempeñar un papel en el tratamiento del paciente." @default.
- W4242745488 created "2022-05-12" @default.
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- W4242745488 date "2022-01-01" @default.
- W4242745488 modified "2023-10-02" @default.
- W4242745488 title "Diffuse increased uptake in intrahepatic biliary ducts on 18F-FDG PET/CT in a case with primary sclerosing cholangitis" @default.
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- W4242745488 doi "https://doi.org/10.1016/j.remnie.2020.12.005" @default.
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