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  • Title: Relation between neutrophil/lymphocyte ratio and primary tumor metabolic activity in patients with malign pleural mesothelioma.
    Author: Özyürek BA, Özmen Ö, Özdemirel TŞ, Erdoğan Y, Kaplan B, Kaplan T.
    Journal: Clin Respir J; 2018 Feb; 12(2):646-651. PubMed ID: 27768834.
    Abstract:
    The aim of this study was to evaluate the relationship of the pre-treatment blood neutrophil/lymphocyte count ratio (NLR) with the maximum standard uptake value (SUVmax) of primary masses on positron emission tomography/computed tomography (PET/CT) taken before treatment in patients diagnosed with malignant pleural mesothelioma (MPM) and to evaluate the contribution to prognosis. A retrospective evaluation was made of 73 patients diagnosed with MPM in our hospital between January 2006 and January 2014. The SUVmax value of the primary mass on pre-treatment PET/CT, the haemogram parameters (Hb, Hct, NLR, MPV, PLT) at the time of diagnosis, the progression history, the date of the final visit, and the date of death of exitus patients was recorded from patient files PET/CT. The study group comprised 37 males (50.7%) with a mean age of 56.1 ± 11.4 years. The median survival time of these patients was 13 months. The survival time of the patient group aged <55 years was significantly longer (P = .006). Although the survival time of patients with NLR < 3 and SUVmax < 5 was longer, the difference was not statistically significant (P = .63, P = 0.08). A statistically significant difference was determined between the mean (or median) SUVmax values of the patient groups with NLR < 3 and NLR ≥3 (P = .019) with the SUVmax value of the NLR < 3 group found to be low. In conclusion, in patients with MPM, NLR ≥3 and high SUVmax values at the time of diagnosis can be considered an indicator of poor prognosis but are not a guide in the prediction of progression.
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