[Colorectal metastases - Current treatment strategies]

Colorectal metastases - Current treatment strategies Abstract. In the course of their disease, more than 50 % of patients with colorectal cancer develop metastases. They are most frequently localized in the liver, followed by the peritoneum and the lungs. The therapeutic options and prognosis of colorectal metastases have improved markedly in recent years. Modern treatment concepts are multimodal and are customized for the individual patient by interdisciplinary tumour boards that follow widely recognised guidelines and norms. The recommendation of an appropriate treatment option in metastasized patients by an interdisciplinary panel of experts is of paramount importance. Besides technical possibilities, factors such as comorbidities, medical outcomes, quality of processes as well as patient-related outcome are all crucial in the decision-making process. In most patients diagnosed with distant metastases, the prognosis is determined by the extent of the liver burden. Hereby, the resection of the liver metastases is of utmost importance to improve the prognosis of a patient, since only those individuals who have successfully undergone resection have a chance for long-term disease free-survival. Whether liver metastases are resectable depends on sufficient volume and function of the future liver remnant (FLR). Manipulation of the FLR as well as upfront oncological treatment of metastases improves the resectability rates in patients with an advanced tumor load in the liver. Laparoscopic liver resection improves patient outcomes by reducing pain and results in a shortened hospital stay. Lung resection for pulmonary metastases as well as cytoreductive surgery for peritoneal metastases are important mainstays of modern personalized treatment concepts. However, results of ongoing trials are eagerly awaited to help quantify the prognostic effects of those therapies and assess their true therapeutic value.