Analysis of Surgical and Oncologic Outcomes After Complete Mesocolic Excision or Non-complete Mesocolic Excision for Right-Sided Colon Cancer

The goal of this observational study is to investigate the efficacy and safety of a modified D3 lymphadenectomy approach compared to Complete Mesocolic Excision (CME) in patients with right-sided colon cancer. The main question it aims to answer is: Does a modified D3 approach improve disease-free survival (DFS) in patients with Stage I-III right-sided colon cancer who undergo right-sided colectomy, without increasing surgical complications compared to CME? Patients with right-sided colon cancer, Stage I-III, who undergo either modified D3 lymphadenectomy or CME as part of their standard treatment, will have their DFS, complications, bleeding volume, number of lymph nodes harvested, and stage distribution compared over a follow-up period. This study ultimately aims to determine the optimal surgical approach for maximizing oncologic outcomes in right-sided colon cancer.