Metastasis, or metastatic disease, is the spread of a cancer or other disease from one organ or part to another not directly connected with it. The new occurrences of disease thus generated are referred to as metastases (sometimes abbreviated "mets"). It was previously thought that only malignant tumor cells and infections have the capacity to metastasize (also spelled metastasise); new research has caused this to be reconsidered. The existence of metastatic cancers in the absence of primary tumors also suggests that metastasis is not always caused by malignant cells that leave primary tumors. Metastasis is a Greek word meaning "displacement", from μετά, meta, "next", and στάσις, stasis, "placement".

Metástasis (meaning "metastasis" in Spanish) is an American, Spanish-language version of the U.S. crime drama Breaking Bad. It tells the story of Walter Blanco (Walter White).