Infectious side effects Specially in form of infections after surgery including: LEAK anastomosis after surgery of GI system (Gastrointestinal tract) is the main factor for serious morbidity. Systematic inflammation markers including: CRP and counting white blood cells were reported that may lead to early diagnosis; meanwhile, the relative prediction test is not clear. Objective: Evaluating and determining value of CRP anticipation for early diagnosis of side effects after elective surgery of GI system (Gastrointestinal tract)