“…However, about 80% of patients are affected by unresectable CRLM, due to bilobar multiple liver metastases and/or extrahepatic disease. Nowadays, systemic chemotherapy regimens [ 64 , 76 , 79 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 ] are proposed to convert patients with initially unresectable CRLM to obtaining and improving long-term surgical and oncological outcomes [ 23 , 82 , 90 , 91 , 92 , 93 ]. Nevertheless, some patients will progress during neoadjuvant chemotherapy with a debated role of liver resection in this subgroup.…”