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- Main article: Etiology
Pathogenesis is the mechanism by which a certain etiological factor causes disease (pathos = disease, genesis = development).
Some forms of pathogenesis are:
In most diseases, there are multiple pathogenetical processes at work. For example, certain cancers arise from dysfunction of the immune system (skin tumors and lymphoma after a renal transplant - which requires immunosuppression).
Often, a potential etiology is identified by epidemiological observations before a pathological link can be drawn between the cause and the disease.
See also[]
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