A major role and, at the same time, a question mark, both for patients and doctors, is the possibility that drugs and anesthetic techniques influence cancer metastasis. Cancer is the leading cause of death worldwide. This trend will continue in the future. Most of the deaths of cancer patients are due to complications arising from metastases. The metastasis process of a tumor depends on its intrinsic properties and interaction with the host. The treatment of tumors by performing a surgical intervention, radical or palliative, has a significant impact. For these reasons, the rate of survival and migration of cancer cells in the perioperative period is studied quite insistently and complexly. Thus, surgical intervention and anesthetic support in cancer patients becomes of great importance, because it represents the vulnerable link, both from the point of view of the operation itself, as well as the possibility that drugs, anesthetic techniques may or may not influence tumor metastasis.