[When should we resect colorectal liver metastases?].

6000 new cases of colorectal cancer are diagnosed each year in Belgium. 50% of these patients shall develop liver metastasis. Resection remains the only chance of long term survival and must be considered as an endpoint from the beginning of the treatment. It is the result of a multidisciplinary discussion and a global approach of the disease. It is rarely directly feasible, but there are many techniques which may make it achievable in the end. Today, resection criteria are exclusively technical and neither bad prognosis factors, nor the presence of extra-hepatic metastases should exclude liver resection. This resection must be assessed by a confirmed hepatobiliary surgeon and must be proposed to all patients whatever their age as long as their general state of health is good.