The introduction of complete mesocolic excision (CME) with central vascular ligation (CVL) for rightsided colon cancer has improved the oncologic outcomes. Recently, we have introduced a modified CME (mCME) procedure that keeps the same principles as the originally described CME but with a more tailored approach. | Prospective study of oncologic outcomes after laparoscopic modified complete mesocolic excision for non-metastatic right colon cancer PIONEER study Study protocol of a multicentre single-arm trial