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Search form. Causes. The cause or causes of lymphoma are largely a mystery. There may be some genetic predisposition, or it may be caused by an environmental trigger such as pollution. There is not, however, sufficient evidence to provide a definitive answer.
Unfortunately, most cases of leukemia cannot be prevented, because there is no known causes of lymphoma. There are only possible risk factors. A risk factor is something that increases a person's chance of getting a disease. Some risk factors, like smoking, can be controlled.