Extended Clavien-Dindo classification of surgical complications: Japan Clinical Oncology Group postoperative complications criteria

Prior to publication of the Clavien-Dindo classification in 2004, there were no grading definitions for surgical complications in either clinical practice or surgical trials. This report establishes supplementary criteria for this classification to standardize the evaluation of postoperative complications in clinical trials.The Japan Clinical Oncology Group (JCOG) commissioned a committee. Members from nine surgical study groups (gastric,...