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Preoperative controlling nutritional status (CONUT) is useful to estimate the prognosis after esophagectomy for esophageal cancer.

PURPOSE: The aim of this study is to confirm the predictive value of controlling nutritional status (CONUT), as a postoperative prognostic marker for esophageal cancer patients undergoing esophagectomy.

METHODS: We retrospectively analyzed 373 patients who underwent three-incision esophagectomy with 2- or 3-field lymphadenectomy for esophageal cancer between April 2005 and March 2016. The patients were divided into three groups based on the degree of preoperative malnutrition as assessed by CONUT: normal, light malnutrition, and moderate or severe malnutrition.

RESULTS: The patients with moderate or severe malnutrition experienced a significantly higher frequency of reoperation (normal or light malnutrition, 6.3%; moderate or severe malnutrition, 18.2%; P = 0.033) and a higher tendency for respiratory morbidities (normal or light malnutrition, 14.0%; moderate or severe malnutrition, 27.3%; P = 0.088). Cox regression analysis identified a significantly poor prognosis, in both overall survival (hazard ratio (HR), 3.56; 95% confidence interval (CI), 1.714-7.390; P < 0.001) and cancer-specific survival (HR, 3.41; 95% CI, 1.790-6.516; P = 0.046).

CONCLUSIONS: CONUT is convenient and useful for preoperatively assessing malnutrition and prognosis of esophageal cancer patients who underwent surgery.

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