Up to half of thymomas do not produce any symptoms or signs, and they are first diagnosed when physicians perform an imaging study of the chest for another reason. When symptoms do occur, these can include
Less commonly, associated symptoms and signs can include
Cause of thymoma
The exact cause of thymomas is unknown. They occur in both men and women, and there are no known risk factors that predispose a person to developing thymoma.
Other thymoma symptoms and signs
Main Article on Thymoma Symptoms and Signs
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