Survival Outcome After Minilaparotomy for the Treatment of Colorectal Cancer

The primary aim of this study is - to determine the difference of survival outcome (3-year overall survival, 3y OS) between after minilaparotomy and after laparoscopy.. Other aims include to determine the data below when minilaparotomy and laparoscopy are compared with each other. * 3-year disease free survival, 3y DFS * 5-year overall survival, 5y OS * 5-year disease free survival, 5y DFS * Local recurrence rate, LRR * Postoperative complications Incidence and mortality at 30 days