The aim of the study is to evaluate if it is possible to mark with a wire colorectal hepatic
metastases after complete response to a neoadjuvant chemotherapy.Primary the investigators
want to investigate if the wire marking is a possibility to mark respectively to identify
these lesions. Further the investigators want to evaluate how many patients with complete
radiologic have complete histologic response in their specimen respectively in how many
specimens in the definitive histology tumor cells are visible.