Fig. 2

Compared with right hemicolectomy with D3 lymph node dissection, the main vessels of the right-sided colon should be preserved in our operation. A An enlarged apical lymph node surrounds the ileocolic vessels (arrow). Apical lymph node (no. 203) dissection is performed along the ileocolic vessels. B Apical lymph node (no. 223) dissection is performed along the middle colic artery (MCA). C The right colonic vein (RCV) is preserved, and a careful dissection along it is performed. D The accessory right colic artery (ARCA) is preserved, and a careful dissection along it is performed