Risk factors for DSL include age > 60 years; an American Society of Anesthesiologists physical status score of > 2; a high body mass index of > 24 kg/m2; an elevated preoperative C-reactive protein level; multiple comorbidities, including diabetes mellitus, chronic heart failure, and liver cirrhosis; pathological T-stage of > 2; gastric outlet obstruction; bio-humoral nutritional status impairment (pre-operative albumin level < 35 g/L and/or pre-operative lymphocytes number < 2000/mm3); intra-operative blood losses > 300 mL; and no DS reinforcement [2, 5, 6]. This evidence concerns the gene CRP and diabetes mellitus.