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      Impact of the Preoperative Controlling Nutritional Status (CONUT) Score on the Survival after Curative Surgery for Colorectal Cancer


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          Recently, the preoperative immune-nutritional status has been reported to correlate with the survival rate in patients with colorectal cancer (CRC). However, there have been no reports on the relationship between the controlling nutritional status (CONUT) score and the clinical outcome after curative surgery for CRC. We herein evaluated the prognostic significance of the CONUT score in patients with CRC, and then compared the accuracy of the CONUT score and the prognostic nutritional index (PNI) as a predictor of survival.


          We retrospectively reviewed a database of 204 patients who underwent curative surgery for Stage II/III CRC. Patients were divided into two groups according to the CONUT score and the PNI.


          The five-year cancer-specific survival (CSS) rate was significantly higher at 92.7% in the low CONUT group, compared to a rate of 81.0% in the high CONUT group (p=0.0016). The five-year CSS was 71.2% in the low PNI group and 92.3% in the high PNI group, which showed a significant difference (p=0.0155). A multivariate analysis showed that lymph node metastasis and the CONUT score were independent risk factors for CSS.


          This study suggested that the CONUT score is a strong independent predictor of the survival among CRC patients.

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          [Prognostic nutritional index in gastrointestinal surgery of malnourished cancer patients].

          Based on assessment of 200 malnourished cancer patients of digestive organs, a multiparameter index of nutritional status was defined to relating the risk of postoperative complications to base line nutritional status. The linear predictive model relating the risk of operative complication, mortality or both to nutritional status is given by the relation: prognostic nutritional index (PNI) = 10 Alb. + 0.005 Lymph. C., where Alb. is serum albumin level (g/100 ml) and Lymph. C. is total lymphocytes count/mm3 peripheral blood. When applied prospectively to 189 gastrointestinal surgical patients those who were malnourished and treated by TPN preoperatively, this index provided an accurate, quantitative estimate of operative risk. In general, resection and anastomosis of gastrointestinal tract can be safely practiced when the index is over 45. The same procedure may be dangerous between 45 and 40. In below 40, this kind of operation may be contraindicated. The prognostic nutritional index is useful also to know the prognosis of patients with terminal cancer. Despite practicing TPN to cancer patients with near terminal stages, if the PNI remains below 40 and total lymphocytes count remains below 1,000/mm3, the patients has high possibility to die within the next two months.
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            Systemic inflammatory response predicts survival following curative resection of colorectal cancer.

            Some studies have shown that the presence of a systemic inflammatory response, as evidenced by raised circulating concentrations of C-reactive protein (CRP), predicted recurrence and overall survival in patients with colorectal cancer. The aim of this study was to examine the relationship between the inflammatory response and overall and cancer-specific survival in patients undergoing potentially curative resection for colorectal cancer. A total of 174 patients considered to have undergone curative resection were studied. Circulating CRP concentrations were measured before and/or after operation. The majority of patients were aged 65 years or more, had colonic tumours and Dukes' stage B lesions. During follow-up, 47 patients (27 per cent) developed recurrence and 59 (34 per cent) died. On univariate analysis, age (P < 0.01), Dukes' stage (P < 0.001), and CRP levels before (P < 0.01) and after (P < 0.01) operation were significantly associated with overall and cancer-specific survival. On multivariate analysis of patients in whom preoperative CRP concentration was measured, age (P < 0.01), Dukes' stage (P < 0.05) and CRP concentration (P < 0.01) were independently associated with both overall and cancer-specific survival. In patients who have undergone potentially curative resection for colorectal cancer, the presence of a systemic inflammatory response predicts a poor outcome.
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              CONUT: a tool for controlling nutritional status. First validation in a hospital population.

              The serious problem of hospital undernutrition is still being underestimated, despite its impact on clinical evolution and costs. The screening methods developed so far are not useful for daily clinical practice due to their low effectiveness/cost ratio. We present an screening tool for CONtrolling NUTritional status (CONUT) that allows an automatic daily assessment of nutritional status of all inpatients that undergo routine analysis. The system is based on a computer application that compiles daily all useful patient information available in hospital databases, through the internal network. It automatically assesses the nutritional status taking into account laboratory information including serum albumin, total cholesterol level and total lymphocyte count. We have studied the association between the results of the Subjective Global Assessment (SGA) and Full Nutritional Assessment (FNA) with those from CONUT, in a sample of 53 individuals. The agreement degree between CONUT and FNA as measured by kappa index is 0.669 (p = 0.003), and between CONUT and SGA is 0.488 (p = 0.034). Considering FNA as "gold standard" we obtain a sensitivity of 92.3 and a specificity of 85.0. CONUT seems to be an efficient tool for early detection and continuous control of hospital undernutrition, with the suitable characteristics for these screening functions.

                Author and article information

                Role: Editor
                PLoS One
                PLoS ONE
                PLoS ONE
                Public Library of Science (San Francisco, CA USA )
                6 July 2015
                : 10
                : 7
                : e0132488
                [001]Department of Surgical Oncology, Osaka City University Graduate School of Medicine, Osaka, Japan
                School of Medicine, Fu Jen Catholic University, TAIWAN
                Author notes

                Competing Interests: The authors have declared that no competing interests exist.

                Conceived and designed the experiments: YI MS K. Maeda. Performed the experiments: YI. Analyzed the data: YI. Contributed reagents/materials/analysis tools: YI MS K. Sugano TI. Wrote the paper: YI. Manuscript review and validation: MS K. Maeda HO HN K. Muguruma HT TT K. Sakurai KH.

                Copyright @ 2015

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

                : 18 December 2014
                : 15 June 2015
                Page count
                Figures: 3, Tables: 9, Pages: 13
                The authors have no support or funding to report.
                Research Article
                Custom metadata
                All relevant data are within the paper.



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