Objective: Laparoscopic colon surgery has the clinical benefits of short hospital stay, less pain after surgery and early return of intestinal function. However, hemodynamic changes may occur in the abdominal organs due to prolonged operation time and increased intra-abdominal pressure compared to open surgery. Methods: In this study, we compared the results of laparoscopic colon surgery with the results of open colon surgery in terms of the effects on the abdominal organs and the changes in acute phase reactants. Results: Patients who underwent colon surgery due to benign and malignant diseases in gastrointestinal surgery department between January 2015 and January 2018 were evaluated. Age, sex, operative time, preoperative and postoperative 24th hour blood values (neutrophil, platelet, albumin, alanine transferase, aspartate transferase, total billirubin, urea, creatinine, c-reactive protein) were compared between the two groups. Operative time in group I (open surgery) was significantly lower than group II (laparoscopic surgery) (p < 0.05). In group I, postoperative c-reactive protein (CRP) increase was significantly lower than group II (p<0.05). In group I, postop albumin decrease was significantly higher than group II (p<0.05). Conclusion: Although the operation time was longer in colorectal surgery, there was no significant impairment in renal and liver function in laparoscopic surgery compared to open surgery. Moreover, this study has shown that laparoscopic surgery was less traumatic than open surgery due to minimal change in albumin and CRP values. [ABSTRACT FROM AUTHOR]