“…Four different approaches to colonic dissection, CME and lymphadenectomy are reported, the difference essentially residing in the sequence of surgical steps and the direction of detachment of the mesocolon from the retroperitoneum: a "medial-to-lateral" approach [22,24,30,32], a "bottom-to-up" approach [23,25,28,29,31,35], a "top-to-down" approach [26] and a "superior mesenteric vein first" approach [27,33,34].…”