The pathogenesis of a disease is the mechanism by which an etiological factor causes the disease. The term can also be used to describe the development of the disease, such as acute, chronic and recurrent. The word comes from the Greek pathos, "disease", and genesis, "creation". Types of pathogenesis include microbial infection, inflammation, malignancy and tissue breakdown. Most diseases are caused by multiple pathogenetical processes together. For example, certain cancers arise from dysfunctio… (More on Pathogenesis)