Supplementary data . Questionnaire “Association Française de Chirurgie” Demographic data Number Center Center number Name (3 first letters) First name (3 first letters) Sex (Male/Female) Maiden name Date of birth American society of anaesthesiology score Comorbidity (Y/N) Diabetes (Y/N) Thrombosis (Y/N) Cardiac disease (Y/N) Arythmia (Y/N) Cirrhosis (Y/N) Renal failure (Y/N) Cardiac insufficiency (Y/N) Smoking(Y/N) Weight (Kg) Height (cm) BMI (Kg/m²) Disease characteristics Date of diagnosis of primary Location of primary tumor (Rectum/ Colon) Resection of primary (Y/N) Date of surgery Type of approach (Laparoscopy/Open) Emergency (Y/N) Occlusion (Y/N) Perforation (Y/N) Hemorraghe (Y/N) Carcinomatosis (Y/N) Preoperative CEA (ng/ml) pT pN pM Neoadjuvant therapy (Y/N) Type of chemotherapy Radiotherapy (Y/N) Adjuvant therapy (Y/N) Type of chemotherapy Adjuvant radiotherapy (Y/N) Number of cycles Time of occurrence of CLM (Mo) Date of CLM diagnosis Number of lesions Segments involved CT scanner (Y/N) MRI (Y/N) Extrahepatic disease (Y/N) Location of Extrahep. disease CEA level CA 19-9 level Initial resectability (Y/N) Preoperative treatment Preop. Chemotherapy (Y/N) Number of cycles Number of lines Type of chemotherapy Preoperative treatment (Continued) Date of first cycle Date of last cycle Biliary drainage (Y/N) Side of drainage (left/right) Date of drainage Portal vein embolization (Y/N) Date of portal vein embolization Intraoperative data Date of surgery Rehepatectomy (Y/N) Type of approach (Laparoscopy/Open) Type of incision Intraoperative ultrasound (Y/N) Distribution (bilobar/ unilobar) Maximal tumor size, mm Missing metastases (Y/N) Number of missing metastases Curative procedure (Y/N) Reasons for non curative resection Anterior approach (Y/N) Duration of surgery, min Pedicle clamping (Y/N) Duration of clamping, min Total vascular exclusion (Y/N) Device use for parenchyma transection Number of specimen Description of hepatectomy Associated procedure (Y/N) Digestive resection (Y/N) Radiofrequency ablation (Y/N) Carcinomatosis resection (Y/N) Biliodigestive anastomosis (Y/N) Intrahepatic arterial infusion (Y/N) Abdominal drainage (Y/N) Thoracic drainage (Y/N) Intraoperative transfusion (Y/N) Number of RBC Postoperative course Duration of intensive care unit, days Nasogastric tube (Y/N) Duration of hospital stay Intrahop death Morbidity (Y/N) Infectious (Y/N) Antibiotherapy (Y/N) Mechanical ventilation (Y/N) Dindo-Clavien classification Reintervention (Y/N) Percutaenous drainage (Y/N) Date of drainage Transfusion (Y/N) Histological findings Number of tumor size Maximal tumor size, mm Minimal resection margin, mm Complete pathologic response (Y/N) TRG 1 to 5 Differenciation Non tumoral liver (NTL) : fibrosis (Y/N) 1 Histological findings (Continued) NTL : sinusoidal obstruction syndrome(SOS) (Y/N) NTL : Grade of SOS NTL : Cirrhosis (Y/N) NTL : Steatosis (Y/N) Postoperatove oncological management Adjuvant chemotherapy (Y/N) Number of cycles Type of CT Date of first adjuvant chemotherapy Follow up CEA at one postop. month (Y/N) Date of last news Status at last follow –up (Y/N) Cause of death Relapse (Y/N) Date of relapse Location of relapse Treatment of relapse Potentially curative treatlement of relapse Chemotherapy (Y/N) Radiofrequency (Y/N) 2