MalnutritiOn Assessment With biOelectrical impedaNce Analysis in gastRic Cancer patIentS Undergoing Multimodal trEatment

Evaluation of the nutritional status and body composition on tumor regression grade in gastric cancer patients scheduled for multimodal treatment. Nutritional status assessment will include: selected clinical variables evaluation (weight, BMI, nutritional status scales), bioelectrical impedance analysis and selected laboratory parameter assessment. After inclusion in the study, each patient will have four consecutive nutritional status assessments: (1) one day prior staging laparoscopy or during qualification to neoadjuvant chemotherapy, (2) one day before the gastrectomy, (3) one month after the gastrectomy, (4) after the last cycle of adjuvant chemotherapy.