The patients were divided into 4 groups randomly according to their nutrition models (Table 1). For nutritional evaluation, anthropometric, biophysical, and laboratorymeasurements were performed. The patients had nutrition according to the determined models during the 7-day preoperative period. TILs in the mucosal part of the endoscopic biopsy tissue before the nutrition regimen and in the surgically resected tumor tissue after nutrition were compared quantitatively. Absolute levels of lymphocytes were analyzed and compared. The microscope slides were reviewed by 1 pathologist (SO), and CD4, CD8, CD16, CD56 counts were performed by 1 researcher (PA) in a blinded fashion